The gemara deals with exceptions to the rule of nullifications in order to explain the cases in the mishna. Is the sciatic nerve forbidden in non kosher animals?
Masechet Chullin is sponsored by Judi Felber in honor of the Hadran Community. “During my first cycle of Daf Yomi, just as we began Masechet Chullin, my son was injured while serving in the IDF. Throughout those two and a half months of difficulty and uncertainty, my fellow learners never left my side. With profound gratitude to the community that held me, encouraged me, and ensured I could keep up with the Daf during those trying times.”
This week’s learning is sponsored by Sara Averick in loving memory of her mother, Leah Shifrin Averick, לאה בת יהודה לייב חייקל וחיה מאשה. “She infused her many descendants with her love for Torah, Israel and the Jewish people.”
This week’s learning is sponsored by Elana and Daniel Storch in honor of their youngest daughter Arianne Yael’s engagement to Brett Aiken and for a for a refuah shleima for Ilana Malka bat Aviva Tamar and Leah Maritza bat Raizel. “We are thrilled to share besorot tovot with our Hadran Family. We pray that the chuppah will take place בשעה טובה ומוצלחת and they should be zoche to build a בית נאמן בישראל.
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Masechet Chullin is sponsored by Judi Felber in honor of the Hadran Community. “During my first cycle of Daf Yomi, just as we began Masechet Chullin, my son was injured while serving in the IDF. Throughout those two and a half months of difficulty and uncertainty, my fellow learners never left my side. With profound gratitude to the community that held me, encouraged me, and ensured I could keep up with the Daf during those trying times.”
This week’s learning is sponsored by Sara Averick in loving memory of her mother, Leah Shifrin Averick, לאה בת יהודה לייב חייקל וחיה מאשה. “She infused her many descendants with her love for Torah, Israel and the Jewish people.”
This week’s learning is sponsored by Elana and Daniel Storch in honor of their youngest daughter Arianne Yael’s engagement to Brett Aiken and for a for a refuah shleima for Ilana Malka bat Aviva Tamar and Leah Maritza bat Raizel. “We are thrilled to share besorot tovot with our Hadran Family. We pray that the chuppah will take place בשעה טובה ומוצלחת and they should be zoche to build a בית נאמן בישראל.
Chullin 100
בְּרִיָּה שָׁאנֵי.
The Gemara answers that the sciatic nerve is a distinct entity, and therefore it is different in that it is not subject to nullification.
וְכֵן חֲתִיכָה שֶׁל נְבֵלָה [וְכוּ׳]. וְתִבְטֵיל בְּרוּבָּא!
§ The mishna states: And similarly, in the case of a piece of an animal carcass or a piece of non-kosher fish that was cooked with similar pieces of kosher meat or fish, when one identifies the forbidden piece and removes it, the rest of the meat or fish is forbidden only if the forbidden piece was large enough to impart flavor to the entire mixture. And if he does not identify and remove the forbidden piece, all the pieces are forbidden, due to the possibility that each piece one selects might be the forbidden piece. The Gemara challenges: Even if the piece of an animal carcass was not removed, let it be nullified by a simple majority, as the majority of the pieces are kosher.
הָנִיחָא לְמַאן דְּאָמַר, כֹּל שֶׁדַּרְכּוֹ לִימָּנוֹת שָׁנִינוּ, אֶלָּא לְמַאן דְּאָמַר אֶת שֶׁדַּרְכּוֹ לִימָּנוֹת שָׁנִינוּ, מַאי אִיכָּא לְמֵימַר? שָׁאנֵי חֲתִיכָה, הוֹאִיל וּרְאוּיָה לְהִתְכַּבֵּד בָּהּ לִפְנֵי הָאוֹרְחִים.
The Gemara clarifies its challenge. This ruling works out well according to the one who said that we learned: Any item whose manner is to be counted, i.e., that is sometimes sold by unit rather than by weight or volume, is considered significant and therefore is not subject to nullification. But according to the one who said that we learned: It is only an item whose manner is exclusively to be counted, i.e., that is always sold by unit, that is considered significant, and is therefore not subject to nullification, what can be said? Since pieces of meat or fish are not always sold by unit, they should be subject to nullification. The Gemara answers: A piece of meat or fish is different, since it is suitable to give honor with it by placing it before guests. Therefore, due to its significance it is not subject to nullification.
וּצְרִיכָא, דְּאִי אַשְׁמְעִינַן גִּיד – מִשּׁוּם דִּבְרִיָּה הִיא, אֲבָל חֲתִיכָה – אֵימָא לָא.
The Gemara adds: And it was necessary for the mishna to teach both the halakha that the sciatic nerve is not nullified and the halakha that a piece of non-kosher meat or fish is not nullified, as if the mishna had taught us only the case of a sciatic nerve, one might think that it is not nullified because it is a distinct entity, but in the case of a piece of non-kosher meat, say it is not significant, and it is subject to nullification.
וְאִי אַשְׁמְעִינַן חֲתִיכָה, הוֹאִיל וּרְאוּיָה לְהִתְכַּבֵּד בָּהּ לִפְנֵי הָאוֹרְחִים, אֲבָל גִּיד – אֵימָא לָא. צְרִיכָא.
And if the mishna had taught us the halakha only in the case of a piece of non-kosher meat or fish, one might think that it is not nullified since it is suitable to give honor with it by placing it before the guests. But in the case of a sciatic nerve, say it is not significant, and it is subject to nullification. Therefore it was necessary for the mishna to teach both cases.
דָּרֵשׁ רַבָּה בַּר בַּר חָנָה: חֲתִיכָה שֶׁל נְבֵלָה וְשֶׁל דָּג טָמֵא אֵינָהּ אוֹסֶרֶת, עַד שֶׁתִּתֵּן טַעַם בָּרוֹטֶב וּבַקֵּיפֶה וּבַחֲתִיכוֹת.
§ Rabba bar bar Ḥana taught: A piece of meat of an unslaughtered carcass or of a non-kosher species of fish that fell into a pot of kosher food does not render the contents of the pot forbidden unless it imparts flavor to the broth and to the deposits of food remaining in the pot and to the other pieces of food in the pot.
אוֹקֵי רַב אָמוֹרָא עֲלֵיהּ, וּדְרַשׁ: כֵּיוָן שֶׁנָּתַן טַעַם בַּחֲתִיכָה – חֲתִיכָה עַצְמָהּ נַעֲשֵׂת נְבֵלָה, וְאוֹסֶרֶת כׇּל הַחֲתִיכוֹת כּוּלָּן מִפְּנֵי שֶׁהֵן מִינָהּ.
Rav disagreed with Rabba bar bar Ḥana and appointed a disseminator to stand before him and teach his statement to a wider audience, and he taught: Once the non-kosher meat or fish has imparted flavor to another piece in the pot, that second piece itself becomes non-kosher. And this second piece renders all the pieces of meat or fish in the pot forbidden, because they are of the same type; therefore, nullification does not apply.
אֲמַר לֵיהּ רַב סָפְרָא לְאַבָּיֵי: מִכְּדֵי רַב כְּמַאן אַמְרַהּ לִשְׁמַעְתֵּיהּ? כְּרַבִּי יְהוּדָה, דְּאָמַר מִין בְּמִינוֹ לֹא בָּטֵיל. מַאי אִירְיָא כִּי נָתַן טַעַם? אֲפִילּוּ כִּי לֹא נָתַן טַעַם נָמֵי! אֲמַר לֵיהּ: הָכָא בְּמַאי עָסְקִינַן – בְּשֶׁקָּדַם וְסִלְּקוֹ.
Rav Safra said to Abaye: Now, in accordance with whose opinion did Rav say his statement? It is in accordance with the opinion of Rabbi Yehuda, who says that a type of food mixed with food of its own type is not nullified. But if so, why does Rav state specifically that the non-kosher meat renders all the pieces forbidden only when it has imparted flavor to another piece? Even if it did not impart flavor to another piece it should render all the contents of the pot forbidden. Abaye said to him: Here we are dealing with a case where he cooked the non-kosher piece with one kosher piece and first removed the non-kosher piece before adding the other pieces. Consequently, the remaining pieces are forbidden only if the non-kosher piece imparted flavor to the piece it was cooked with.
רָבָא אָמַר:
Rava said an alternate answer to Rav Safra’s challenge of Rav’s statement:
אֲפִילּוּ תֵּימָא לֹא קָדַם וְסִלְּקוֹ, הָוֵי מִין וּמִינוֹ וְדָבָר אַחֵר.
You may even say that it is referring to a case where he did not first remove the piece of non-kosher meat or fish. Nevertheless, this is a case of a mixture of one type of food with its own type of food and with something else, i.e., the spices and broth in the pot.
וְכׇל מִין וּמִינוֹ וְדָבָר אַחֵר – סַלֵּק אֶת מִינוֹ כְּמִי שֶׁאֵינוֹ, וְשֶׁאֵין מִינוֹ רָבֶה עָלָיו וּמְבַטְּלוֹ.
And in any case of a type of forbidden food mixed with its own type of food and with something else, disregard the food that is its own type, as though it is not present in the mixture, and if the amount of permitted food that is not its own type is sixty times greater than the forbidden food, the permitted food nullifies it. Rav’s ruling applies to a case where the forbidden piece of meat or fish imparts flavor to another piece before the spices and broth are added, and there is a total volume sixty times greater than the original non-kosher piece. Consequently, even if the amount of spices and broth is eventually sixty times greater than the original non-kosher piece of meat or fish, the entire mixture is forbidden, as the spices and broth are not sixty times greater than the two pieces of meat or fish which are now non-kosher.
מַתְנִי׳ נוֹהֵג בִּטְהוֹרָה, וְאֵינוֹ נוֹהֵג בִּטְמֵאָה. רַבִּי יְהוּדָה אוֹמֵר: אַף בִּטְמֵאָה. אָמַר רַבִּי יְהוּדָה: וַהֲלֹא מִבְּנֵי יַעֲקֹב נֶאֱסַר גִּיד הַנָּשֶׁה, וַעֲדַיִין בְּהֵמָה טְמֵאָה מוּתֶּרֶת לָהֶן? אָמְרוּ לוֹ: בְּסִינַי נֶאֱמַר, אֶלָּא שֶׁנִּכְתַּב בִּמְקוֹמוֹ.
MISHNA: The prohibition of eating the sciatic nerve applies to a kosher animal and does not apply to a non-kosher animal. Rabbi Yehuda says: It applies even to a non-kosher animal. Rabbi Yehuda said in explanation: Wasn’t the sciatic nerve forbidden for the children of Jacob, as it is written: “Therefore the children of Israel eat not the sciatic nerve” (Genesis 32:33), yet the meat of a non-kosher animal was still permitted to them? Since the sciatic nerve of non-kosher animals became forbidden at that time, it remains forbidden now. The Rabbis said to Rabbi Yehuda: The prohibition was stated in Sinai, but it was written in its place, in the battle of Jacob and the angel despite the fact that the prohibition did not take effect then.
גְּמָ׳ וְסָבַר רַבִּי יְהוּדָה אִיסּוּר חָל עַל אִיסּוּר? וְהָתַנְיָא: רַבִּי יְהוּדָה אוֹמֵר: יָכוֹל תְּהֵא נִבְלַת עוֹף טָמֵא מְטַמְּאָה בְּגָדִים בְּבֵית הַבְּלִיעָה?
GEMARA: The Gemara asks: And does Rabbi Yehuda hold that a prohibition takes effect where another prohibition already exists? But isn’t it taught in a baraita: Rabbi Yehuda says: One might have thought that the carcass of a non-kosher bird renders the garments of one who swallows it ritually impure when it is in the throat, similar to the carcass of a kosher bird.
תַּלְמוּד לוֹמַר ״נְבֵלָה וּטְרֵפָה לֹא יֹאכַל לְטׇמְאָה בָהּ״ – מִי שֶׁאִיסּוּרוֹ מִשּׁוּם ״בַּל תֹּאכַל נְבֵלָה״, יָצָא זֶה שֶׁאֵין אִיסּוּרוֹ מִשּׁוּם ״בַּל תֹּאכַל נְבֵלָה״ אֶלָּא מִשּׁוּם ״בַּל תֹּאכַל טְמֵאָה״.
Therefore the verse states concerning the impurity of carcasses of birds: “A carcass, or that which is torn of animals, he shall not eat to defile himself with it” (Leviticus 22:8). The verse indicates that only those birds that are forbidden specifically due to the prohibition: You shall not eat of a carcass, i.e., kosher birds that died without ritual slaughter, cause impurity in this manner. This serves to exclude any bird that is not forbidden due to the prohibition: You shall not eat of a carcass, but rather due to the prohibition: You shall not eat a non-kosher bird. This indicates that according to Rabbi Yehuda, the prohibition of eating a carcass does not take effect with regard to a non-kosher bird, because it is already subject to a different prohibition.
וְכִי תֵּימָא, קָסָבַר אֵין בְּגִידִין בְּנוֹתֵן טַעַם, וּבִטְמֵאָה נָמֵי אִיסּוּר גִּיד אִיכָּא, אִיסּוּר טוּמְאָה לֵיכָּא.
The Gemara continues with its question: And if you would say that Rabbi Yehuda holds that sciatic nerves do not impart flavor, i.e., they do not have flavor and therefore are not classified as food, and even with regard to a non-kosher animal it is prohibited to eat the sciatic nerve because the general prohibition of eating a sciatic nerve applies, whereas the prohibition of eating non-kosher animals does not apply because the sciatic nerve is not considered food, this is untenable.
וְסָבַר רַבִּי יְהוּדָה אֵין בְּגִידִין בְּנוֹתֵן טַעַם? וְהָתַנְיָא: הָאוֹכֵל גִּיד הַנָּשֶׁה שֶׁל בְּהֵמָה טְמֵאָה – רַבִּי יְהוּדָה מְחַיֵּיב שְׁתַּיִם, וְרַבִּי שִׁמְעוֹן פּוֹטֵר!
The Gemara explains: And does Rabbi Yehuda hold that sciatic nerves do not impart flavor? But isn’t it taught in a baraita: With regard to one who eats the sciatic nerve of a non-kosher animal, Rabbi Yehuda deems him liable to receive two sets of lashes, one for eating the sciatic nerve and one for eating the meat of a non-kosher animal, and Rabbi Shimon exempts him entirely from lashes. This indicates that Rabbi Yehuda holds that the sciatic nerve does have flavor.
לְעוֹלָם, קָסָבַר יֵשׁ בְּגִידִין בְּנוֹתֵן טַעַם, וְקָסָבַר נוֹהֵג בַּשְּׁלִיל, דְּאִיסּוּר גִּיד וְאִיסּוּר טוּמְאָה בַּהֲדֵי הֲדָדֵי קָאָתֵי.
The Gemara answers: Actually Rabbi Yehuda holds that sciatic nerves do impart flavor, and he also holds that the prohibition of eating the sciatic nerve applies to the sciatic nerve of an animal fetus. Consequently, although Rabbi Yehuda holds that a prohibition does not take effect where another already exists, one who eats the sciatic nerve of a non-kosher animal is flogged twice, because the prohibition of eating a sciatic nerve and the prohibition of eating meat from a non-kosher animal come into effect at the same time.
וּמִי מָצֵית אָמְרַתְּ נוֹהֵג בַּשְּׁלִיל? וְהָתְנַן: נוֹהֵג בַּשְּׁלִיל, רַבִּי יְהוּדָה אוֹמֵר: אֵינוֹ נוֹהֵג בַּשְּׁלִיל, וְחֶלְבּוֹ מוּתָּר!
The Gemara challenges this answer: And can you say that Rabbi Yehuda holds that the prohibition of eating a sciatic nerve applies to the sciatic nerve of a fetus? But didn’t we learn in a mishna (89b): The prohibition applies to a late-term fetus in the womb. Rabbi Yehuda says: It does not apply to a fetus, and similarly the fat of a fetus is permitted?
הָנֵי מִילֵּי גַּבֵּי טְהוֹרָה, דְּרַחֲמָנָא אָמַר: ״כֹּל בַּבְּהֵמָה תֹּאכֵלוּ״, אֲבָל בִּטְמֵאָה נוֹהֵג.
The Gemara answers: This statement, that the prohibition of eating the sciatic nerve does not apply to a fetus, is with regard to a kosher species of animal, because the Merciful One stated in the Torah: “And every animal that divides the hoof, and has the hoof wholly cloven in two, and chews the cud, among the animals [babehema], that you may eat” (Deuteronomy 14:6). The term babehema may also be translated as: Inside the animals, indicating that anything inside a kosher animal when it is slaughtered is permitted for consumption, including all parts of a fetus. But with regard to a non-kosher species of animal the prohibition applies.
וּמִי מָצֵית אָמְרַתְּ דְּתַרְוַיְיהוּ בַּהֲדֵי הֲדָדֵי קָאָתוּ? וְהָתְנַן: עַל אֵלּוּ טוּמְאוֹת הַנָּזִיר מְגַלֵּחַ, עַל הַמֵּת וְעַל כְּזַיִת מִן הַמֵּת.
The Gemara challenges the assertion that the prohibitions of eating the sciatic nerve and of eating non-kosher meat take effect at the same time. And can you say that they both come into effect at the same time? But didn’t we learn in a mishna (Nazir 49b): A nazirite shaves for having become impure from these following sources of ritual impurity: For having become impure with impurity imparted by a corpse; and for impurity imparted by an olive-bulk of a corpse.
וְקַשְׁיָא לַן: עַל כְּזַיִת מִן הַמֵּת מְגַלֵּחַ, עַל הַמֵּת כּוּלּוֹ לֹא כׇּל שֶׁכֵּן? וְאָמַר רַבִּי יוֹחָנָן: לֹא נִצְרְכָא אֶלָּא לְנֵפֶל שֶׁלֹּא נִתְקַשְּׁרוּ אֵבָרָיו בְּגִידִין. אַלְמָא אִיסּוּר טוּמְאָה קָדֵים!
And this poses a difficulty for us: If a nazirite shaves for becoming impure from an olive-bulk of a corpse, is it not obvious that all the more so he must shave for becoming impure from an entire corpse? And Rabbi Yoḥanan said: It is necessary only with regard to a miscarried fetus whose limbs have not yet become joined to its sinews. Although the fetus does not yet contain an olive-bulk of flesh, since it is a complete entity, it transmits impurity to anything under the same roof. Evidently, the limbs of the body are formed before the nerves and sinews, and therefore the prohibition of eating non-kosher meat takes effect prior to the prohibition of the sciatic nerve.
אַף עַל גַּב דְּאִיסּוּר טוּמְאָה קָדֵים, אָתֵי אִיסּוּר גִּיד חָיֵיל עֲלֵיהּ, שֶׁכֵּן אִיסּוּרוֹ נוֹהֵג בִּבְנֵי נֹחַ.
The Gemara answers: Even though the prohibition of eating non-kosher meat takes effect prior to the prohibition of eating the sciatic nerve, the prohibition of the sciatic nerve also comes and takes effect upon a non-kosher animal because this prohibition applies to descendants of Noah, i.e., to gentiles. Since the prohibition of eating the sciatic nerve adds an additional stringency that did not exist with regard to non-kosher meat, it takes effect even though there was an already existing prohibition.
דַּיְקָא נָמֵי, דְּקָתָנֵי: אָמַר רַבִּי יְהוּדָה: וַהֲלֹא מִבְּנֵי יַעֲקֹב נֶאֱסַר גִּיד הַנָּשֶׁה, וַעֲדַיִין בְּהֵמָה טְמֵאָה מוּתֶּרֶת לָהֶם.
According to this answer, the language of the mishna is also precise, as it teaches: Rabbi Yehuda said: Wasn’t the sciatic nerve forbidden for the children of Jacob, as it is written: “Therefore the children of Israel eat not the sciatic nerve” (Genesis 32:33), yet the meat of a non-kosher animal was still permitted to them? This indicates that the basis of Rabbi Yehuda’s opinion is the fact that the sciatic nerve was forbidden to the children of Jacob, who had the status of descendants of Noah.
גּוּפָא: הָאוֹכֵל גִּיד הַנָּשֶׁה שֶׁל בְּהֵמָה טְמֵאָה – רַבִּי יְהוּדָה מְחַיֵּיב שְׁתַּיִם,
§ The Gemara returns to the matter itself cited above. With regard to one who eats the sciatic nerve of a non-kosher animal, Rabbi Yehuda deems him liable to receive two sets of lashes: One for eating the sciatic nerve and one for eating the meat of a non-kosher animal;
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Hullin 18: Serration, Cartilage, and the Stringencies of Babylonia
05.18.2026 | ב׳ בסיון תשפ״ו
Hullin 15: Shechting and Cooking on Shabbat: A Decree against Temptation
05.15.2026 | כ״ח באייר תשפ״ו
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“I got my job through the NY Times” was an ad campaign when I was growing up. I can headline “I got my daily Daf shiur and Hadran through the NY Times”. I read the January 4, 2020 feature on Reb. Michelle Farber and Hadran and I have been participating ever since. Thanks NY Times & Hadran!
Deborah Aschheim
New York, United States
I started learning daf yomi at the beginning of this cycle. As the pandemic evolved, it’s been so helpful to me to have this discipline every morning to listen to the daf podcast after I’ve read the daf; learning about the relationships between the rabbis and the ways they were constructing our Jewish religion after the destruction of the Temple. I’m grateful to be on this journey!
Mona Fishbane
Teaneck NJ, United States
About a year into learning more about Judaism on a path to potential conversion, I saw an article about the upcoming Siyum HaShas in January of 2020. My curiosity was piqued and I immediately started investigating what learning the Daf actually meant. Daily learning? Just what I wanted. Seven and a half years? I love a challenge! So I dove in head first and I’ve enjoyed every moment!!
Nickie Matthews
Blacksburg, United States
I had dreamed of doing daf yomi since I had my first serious Talmud class 18 years ago at Pardes with Rahel Berkovitz, and then a couple of summers with Leah Rosenthal. There is no way I would be able to do it without another wonderful teacher, Michelle, and the Hadran organization. I wake up and am excited to start each day with the next daf.
Beth Elster
Irvine, United States
While vacationing in San Diego, Rabbi Leah Herz asked if I’d be interested in being in hevruta with her to learn Daf Yomi through Hadran. Why not? I had loved learning Gemara in college in 1971 but hadn’t returned. With the onset of covid, Daf Yomi and Rabbanit Michelle centered me each day. Thank-you for helping me grow and enter this amazing world of learning.
Meryll Page
Minneapolis, MN, United States
Years ago, I attended the local Siyum HaShas with my high school class. It was inspiring! Through that cycle and the next one, I studied masekhtot on my own and then did “daf yomi practice.” The amazing Hadran Siyum HaShas event firmed my resolve to “really do” Daf Yomi this time. It has become a family goal. We’ve supported each other through challenges, and now we’re at the Siyum of Seder Moed!
Elisheva Brauner
Jerusalem, Israel
Having never learned Talmud before, I started Daf Yomi in hopes of connecting to the Rabbinic tradition, sharing a daily idea on Instagram (@dafyomiadventures). With Hadran and Sefaria, I slowly gained confidence in my skills and understanding. Now, part of the Pardes Jewish Educators Program, I can’t wait to bring this love of learning with me as I continue to pass it on to my future students.
Hannah Greenberg
Pennsylvania, United States
I began learning with Rabbanit Michelle’s wonderful Talmud Skills class on Pesachim, which really enriched my Pesach seder, and I have been learning Daf Yomi off and on over the past year. Because I’m relatively new at this, there is a “chiddush” for me every time I learn, and the knowledge and insights of the group members add so much to my experience. I feel very lucky to be a part of this.
Julie Landau
Karmiel, Israel
I decided to learn one masechet, Brachot, but quickly fell in love and never stopped! It has been great, everyone is always asking how it’s going and chering me on, and my students are always making sure I did the day’s daf.
Yafit Fishbach
Memphis, Tennessee, United States
When I was working and taking care of my children, learning was never on the list. Now that I have more time I have two different Gemora classes and the nach yomi as well as the mishna yomi daily.
Shoshana Shinnar
Jerusalem, Israel
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Susan Fisher
Raanana, Israel
I attended the Siyum so that I could tell my granddaughter that I had been there. Then I decided to listen on Spotify and after the siyum of Brachot, Covid and zoom began. It gave structure to my day. I learn with people from all over the world who are now my friends – yet most of us have never met. I can’t imagine life without it. Thank you Rabbanit Michelle.
Emma Rinberg
Raanana, Israel
When I began learning Daf Yomi at the beginning of the current cycle, I was preparing for an upcoming surgery and thought that learning the Daf would be something positive I could do each day during my recovery, even if I accomplished nothing else. I had no idea what a lifeline learning the Daf would turn out to be in so many ways.
Laura Shechter
Lexington, MA, United States
After all the hype on the 2020 siyum I became inspired by a friend to begin learning as the new cycle began.with no background in studying Talmud it was a bit daunting in the beginning. my husband began at the same time so we decided to study on shabbat together. The reaction from my 3 daughters has been fantastic. They are very proud. It’s been a great challenge for my brain which is so healthy!
Stacey Goodstein Ashtamker
Modi’in, Israel
After reading the book, “ If All The Seas Were Ink “ by Ileana Kurshan I started studying Talmud. I searched and studied with several teachers until I found Michelle Farber. I have been studying with her for two years. I look forward every day to learn from her.
Janine Rubens
Virginia, United States
It happened without intent (so am I yotzei?!) – I watched the women’s siyum live and was so moved by it that the next morning, I tuned in to Rabbanit Michelle’s shiur, and here I am, still learning every day, over 2 years later. Some days it all goes over my head, but others I grasp onto an idea or a story, and I ‘get it’ and that’s the best feeling in the world. So proud to be a Hadran learner.
Jeanne Yael Klempner
Zichron Yaakov, Israel
I’ve been learning since January 2020, and in June I started drawing a phrase from each daf. Sometimes it’s easy (e.g. plants), sometimes it’s very hard (e.g. korbanot), and sometimes it’s loads of fun (e.g. bird racing) to find something to draw. I upload my pictures from each masechet to #DafYomiArt. I am enjoying every step of the journey.
Gila Loike
Ashdod, Israel
I start learning Daf Yomi in January 2020. The daily learning with Rabbanit Michelle has kept me grounded in this very uncertain time. Despite everything going on – the Pandemic, my personal life, climate change, war, etc… I know I can count on Hadran’s podcast to bring a smile to my face.
Deb Engel
Los Angeles, United States
3 years ago, I joined Rabbanit Michelle to organize the unprecedented Siyum HaShas event in Jerusalem for thousands of women. The whole experience was so inspiring that I decided then to start learning the daf and see how I would go…. and I’m still at it. I often listen to the Daf on my bike in mornings, surrounded by both the external & the internal beauty of Eretz Yisrael & Am Yisrael!
Lisa Kolodny
Raanana, Israel
It’s hard to believe it has been over two years. Daf yomi has changed my life in so many ways and has been sustaining during this global sea change. Each day means learning something new, digging a little deeper, adding another lens, seeing worlds with new eyes. Daf has also fostered new friendships and deepened childhood connections, as long time friends have unexpectedly become havruta.
Joanna Rom
Northwest Washington, United States
Chullin 100
בְּרִיָּה שָׁאנֵי.
The Gemara answers that the sciatic nerve is a distinct entity, and therefore it is different in that it is not subject to nullification.
וְכֵן חֲתִיכָה שֶׁל נְבֵלָה [וְכוּ׳]. וְתִבְטֵיל בְּרוּבָּא!
§ The mishna states: And similarly, in the case of a piece of an animal carcass or a piece of non-kosher fish that was cooked with similar pieces of kosher meat or fish, when one identifies the forbidden piece and removes it, the rest of the meat or fish is forbidden only if the forbidden piece was large enough to impart flavor to the entire mixture. And if he does not identify and remove the forbidden piece, all the pieces are forbidden, due to the possibility that each piece one selects might be the forbidden piece. The Gemara challenges: Even if the piece of an animal carcass was not removed, let it be nullified by a simple majority, as the majority of the pieces are kosher.
הָנִיחָא לְמַאן דְּאָמַר, כֹּל שֶׁדַּרְכּוֹ לִימָּנוֹת שָׁנִינוּ, אֶלָּא לְמַאן דְּאָמַר אֶת שֶׁדַּרְכּוֹ לִימָּנוֹת שָׁנִינוּ, מַאי אִיכָּא לְמֵימַר? שָׁאנֵי חֲתִיכָה, הוֹאִיל וּרְאוּיָה לְהִתְכַּבֵּד בָּהּ לִפְנֵי הָאוֹרְחִים.
The Gemara clarifies its challenge. This ruling works out well according to the one who said that we learned: Any item whose manner is to be counted, i.e., that is sometimes sold by unit rather than by weight or volume, is considered significant and therefore is not subject to nullification. But according to the one who said that we learned: It is only an item whose manner is exclusively to be counted, i.e., that is always sold by unit, that is considered significant, and is therefore not subject to nullification, what can be said? Since pieces of meat or fish are not always sold by unit, they should be subject to nullification. The Gemara answers: A piece of meat or fish is different, since it is suitable to give honor with it by placing it before guests. Therefore, due to its significance it is not subject to nullification.
וּצְרִיכָא, דְּאִי אַשְׁמְעִינַן גִּיד – מִשּׁוּם דִּבְרִיָּה הִיא, אֲבָל חֲתִיכָה – אֵימָא לָא.
The Gemara adds: And it was necessary for the mishna to teach both the halakha that the sciatic nerve is not nullified and the halakha that a piece of non-kosher meat or fish is not nullified, as if the mishna had taught us only the case of a sciatic nerve, one might think that it is not nullified because it is a distinct entity, but in the case of a piece of non-kosher meat, say it is not significant, and it is subject to nullification.
וְאִי אַשְׁמְעִינַן חֲתִיכָה, הוֹאִיל וּרְאוּיָה לְהִתְכַּבֵּד בָּהּ לִפְנֵי הָאוֹרְחִים, אֲבָל גִּיד – אֵימָא לָא. צְרִיכָא.
And if the mishna had taught us the halakha only in the case of a piece of non-kosher meat or fish, one might think that it is not nullified since it is suitable to give honor with it by placing it before the guests. But in the case of a sciatic nerve, say it is not significant, and it is subject to nullification. Therefore it was necessary for the mishna to teach both cases.
דָּרֵשׁ רַבָּה בַּר בַּר חָנָה: חֲתִיכָה שֶׁל נְבֵלָה וְשֶׁל דָּג טָמֵא אֵינָהּ אוֹסֶרֶת, עַד שֶׁתִּתֵּן טַעַם בָּרוֹטֶב וּבַקֵּיפֶה וּבַחֲתִיכוֹת.
§ Rabba bar bar Ḥana taught: A piece of meat of an unslaughtered carcass or of a non-kosher species of fish that fell into a pot of kosher food does not render the contents of the pot forbidden unless it imparts flavor to the broth and to the deposits of food remaining in the pot and to the other pieces of food in the pot.
אוֹקֵי רַב אָמוֹרָא עֲלֵיהּ, וּדְרַשׁ: כֵּיוָן שֶׁנָּתַן טַעַם בַּחֲתִיכָה – חֲתִיכָה עַצְמָהּ נַעֲשֵׂת נְבֵלָה, וְאוֹסֶרֶת כׇּל הַחֲתִיכוֹת כּוּלָּן מִפְּנֵי שֶׁהֵן מִינָהּ.
Rav disagreed with Rabba bar bar Ḥana and appointed a disseminator to stand before him and teach his statement to a wider audience, and he taught: Once the non-kosher meat or fish has imparted flavor to another piece in the pot, that second piece itself becomes non-kosher. And this second piece renders all the pieces of meat or fish in the pot forbidden, because they are of the same type; therefore, nullification does not apply.
אֲמַר לֵיהּ רַב סָפְרָא לְאַבָּיֵי: מִכְּדֵי רַב כְּמַאן אַמְרַהּ לִשְׁמַעְתֵּיהּ? כְּרַבִּי יְהוּדָה, דְּאָמַר מִין בְּמִינוֹ לֹא בָּטֵיל. מַאי אִירְיָא כִּי נָתַן טַעַם? אֲפִילּוּ כִּי לֹא נָתַן טַעַם נָמֵי! אֲמַר לֵיהּ: הָכָא בְּמַאי עָסְקִינַן – בְּשֶׁקָּדַם וְסִלְּקוֹ.
Rav Safra said to Abaye: Now, in accordance with whose opinion did Rav say his statement? It is in accordance with the opinion of Rabbi Yehuda, who says that a type of food mixed with food of its own type is not nullified. But if so, why does Rav state specifically that the non-kosher meat renders all the pieces forbidden only when it has imparted flavor to another piece? Even if it did not impart flavor to another piece it should render all the contents of the pot forbidden. Abaye said to him: Here we are dealing with a case where he cooked the non-kosher piece with one kosher piece and first removed the non-kosher piece before adding the other pieces. Consequently, the remaining pieces are forbidden only if the non-kosher piece imparted flavor to the piece it was cooked with.
רָבָא אָמַר:
Rava said an alternate answer to Rav Safra’s challenge of Rav’s statement:
אֲפִילּוּ תֵּימָא לֹא קָדַם וְסִלְּקוֹ, הָוֵי מִין וּמִינוֹ וְדָבָר אַחֵר.
You may even say that it is referring to a case where he did not first remove the piece of non-kosher meat or fish. Nevertheless, this is a case of a mixture of one type of food with its own type of food and with something else, i.e., the spices and broth in the pot.
וְכׇל מִין וּמִינוֹ וְדָבָר אַחֵר – סַלֵּק אֶת מִינוֹ כְּמִי שֶׁאֵינוֹ, וְשֶׁאֵין מִינוֹ רָבֶה עָלָיו וּמְבַטְּלוֹ.
And in any case of a type of forbidden food mixed with its own type of food and with something else, disregard the food that is its own type, as though it is not present in the mixture, and if the amount of permitted food that is not its own type is sixty times greater than the forbidden food, the permitted food nullifies it. Rav’s ruling applies to a case where the forbidden piece of meat or fish imparts flavor to another piece before the spices and broth are added, and there is a total volume sixty times greater than the original non-kosher piece. Consequently, even if the amount of spices and broth is eventually sixty times greater than the original non-kosher piece of meat or fish, the entire mixture is forbidden, as the spices and broth are not sixty times greater than the two pieces of meat or fish which are now non-kosher.
מַתְנִי׳ נוֹהֵג בִּטְהוֹרָה, וְאֵינוֹ נוֹהֵג בִּטְמֵאָה. רַבִּי יְהוּדָה אוֹמֵר: אַף בִּטְמֵאָה. אָמַר רַבִּי יְהוּדָה: וַהֲלֹא מִבְּנֵי יַעֲקֹב נֶאֱסַר גִּיד הַנָּשֶׁה, וַעֲדַיִין בְּהֵמָה טְמֵאָה מוּתֶּרֶת לָהֶן? אָמְרוּ לוֹ: בְּסִינַי נֶאֱמַר, אֶלָּא שֶׁנִּכְתַּב בִּמְקוֹמוֹ.
MISHNA: The prohibition of eating the sciatic nerve applies to a kosher animal and does not apply to a non-kosher animal. Rabbi Yehuda says: It applies even to a non-kosher animal. Rabbi Yehuda said in explanation: Wasn’t the sciatic nerve forbidden for the children of Jacob, as it is written: “Therefore the children of Israel eat not the sciatic nerve” (Genesis 32:33), yet the meat of a non-kosher animal was still permitted to them? Since the sciatic nerve of non-kosher animals became forbidden at that time, it remains forbidden now. The Rabbis said to Rabbi Yehuda: The prohibition was stated in Sinai, but it was written in its place, in the battle of Jacob and the angel despite the fact that the prohibition did not take effect then.
גְּמָ׳ וְסָבַר רַבִּי יְהוּדָה אִיסּוּר חָל עַל אִיסּוּר? וְהָתַנְיָא: רַבִּי יְהוּדָה אוֹמֵר: יָכוֹל תְּהֵא נִבְלַת עוֹף טָמֵא מְטַמְּאָה בְּגָדִים בְּבֵית הַבְּלִיעָה?
GEMARA: The Gemara asks: And does Rabbi Yehuda hold that a prohibition takes effect where another prohibition already exists? But isn’t it taught in a baraita: Rabbi Yehuda says: One might have thought that the carcass of a non-kosher bird renders the garments of one who swallows it ritually impure when it is in the throat, similar to the carcass of a kosher bird.
תַּלְמוּד לוֹמַר ״נְבֵלָה וּטְרֵפָה לֹא יֹאכַל לְטׇמְאָה בָהּ״ – מִי שֶׁאִיסּוּרוֹ מִשּׁוּם ״בַּל תֹּאכַל נְבֵלָה״, יָצָא זֶה שֶׁאֵין אִיסּוּרוֹ מִשּׁוּם ״בַּל תֹּאכַל נְבֵלָה״ אֶלָּא מִשּׁוּם ״בַּל תֹּאכַל טְמֵאָה״.
Therefore the verse states concerning the impurity of carcasses of birds: “A carcass, or that which is torn of animals, he shall not eat to defile himself with it” (Leviticus 22:8). The verse indicates that only those birds that are forbidden specifically due to the prohibition: You shall not eat of a carcass, i.e., kosher birds that died without ritual slaughter, cause impurity in this manner. This serves to exclude any bird that is not forbidden due to the prohibition: You shall not eat of a carcass, but rather due to the prohibition: You shall not eat a non-kosher bird. This indicates that according to Rabbi Yehuda, the prohibition of eating a carcass does not take effect with regard to a non-kosher bird, because it is already subject to a different prohibition.
וְכִי תֵּימָא, קָסָבַר אֵין בְּגִידִין בְּנוֹתֵן טַעַם, וּבִטְמֵאָה נָמֵי אִיסּוּר גִּיד אִיכָּא, אִיסּוּר טוּמְאָה לֵיכָּא.
The Gemara continues with its question: And if you would say that Rabbi Yehuda holds that sciatic nerves do not impart flavor, i.e., they do not have flavor and therefore are not classified as food, and even with regard to a non-kosher animal it is prohibited to eat the sciatic nerve because the general prohibition of eating a sciatic nerve applies, whereas the prohibition of eating non-kosher animals does not apply because the sciatic nerve is not considered food, this is untenable.
וְסָבַר רַבִּי יְהוּדָה אֵין בְּגִידִין בְּנוֹתֵן טַעַם? וְהָתַנְיָא: הָאוֹכֵל גִּיד הַנָּשֶׁה שֶׁל בְּהֵמָה טְמֵאָה – רַבִּי יְהוּדָה מְחַיֵּיב שְׁתַּיִם, וְרַבִּי שִׁמְעוֹן פּוֹטֵר!
The Gemara explains: And does Rabbi Yehuda hold that sciatic nerves do not impart flavor? But isn’t it taught in a baraita: With regard to one who eats the sciatic nerve of a non-kosher animal, Rabbi Yehuda deems him liable to receive two sets of lashes, one for eating the sciatic nerve and one for eating the meat of a non-kosher animal, and Rabbi Shimon exempts him entirely from lashes. This indicates that Rabbi Yehuda holds that the sciatic nerve does have flavor.
לְעוֹלָם, קָסָבַר יֵשׁ בְּגִידִין בְּנוֹתֵן טַעַם, וְקָסָבַר נוֹהֵג בַּשְּׁלִיל, דְּאִיסּוּר גִּיד וְאִיסּוּר טוּמְאָה בַּהֲדֵי הֲדָדֵי קָאָתֵי.
The Gemara answers: Actually Rabbi Yehuda holds that sciatic nerves do impart flavor, and he also holds that the prohibition of eating the sciatic nerve applies to the sciatic nerve of an animal fetus. Consequently, although Rabbi Yehuda holds that a prohibition does not take effect where another already exists, one who eats the sciatic nerve of a non-kosher animal is flogged twice, because the prohibition of eating a sciatic nerve and the prohibition of eating meat from a non-kosher animal come into effect at the same time.
וּמִי מָצֵית אָמְרַתְּ נוֹהֵג בַּשְּׁלִיל? וְהָתְנַן: נוֹהֵג בַּשְּׁלִיל, רַבִּי יְהוּדָה אוֹמֵר: אֵינוֹ נוֹהֵג בַּשְּׁלִיל, וְחֶלְבּוֹ מוּתָּר!
The Gemara challenges this answer: And can you say that Rabbi Yehuda holds that the prohibition of eating a sciatic nerve applies to the sciatic nerve of a fetus? But didn’t we learn in a mishna (89b): The prohibition applies to a late-term fetus in the womb. Rabbi Yehuda says: It does not apply to a fetus, and similarly the fat of a fetus is permitted?
הָנֵי מִילֵּי גַּבֵּי טְהוֹרָה, דְּרַחֲמָנָא אָמַר: ״כֹּל בַּבְּהֵמָה תֹּאכֵלוּ״, אֲבָל בִּטְמֵאָה נוֹהֵג.
The Gemara answers: This statement, that the prohibition of eating the sciatic nerve does not apply to a fetus, is with regard to a kosher species of animal, because the Merciful One stated in the Torah: “And every animal that divides the hoof, and has the hoof wholly cloven in two, and chews the cud, among the animals [babehema], that you may eat” (Deuteronomy 14:6). The term babehema may also be translated as: Inside the animals, indicating that anything inside a kosher animal when it is slaughtered is permitted for consumption, including all parts of a fetus. But with regard to a non-kosher species of animal the prohibition applies.
וּמִי מָצֵית אָמְרַתְּ דְּתַרְוַיְיהוּ בַּהֲדֵי הֲדָדֵי קָאָתוּ? וְהָתְנַן: עַל אֵלּוּ טוּמְאוֹת הַנָּזִיר מְגַלֵּחַ, עַל הַמֵּת וְעַל כְּזַיִת מִן הַמֵּת.
The Gemara challenges the assertion that the prohibitions of eating the sciatic nerve and of eating non-kosher meat take effect at the same time. And can you say that they both come into effect at the same time? But didn’t we learn in a mishna (Nazir 49b): A nazirite shaves for having become impure from these following sources of ritual impurity: For having become impure with impurity imparted by a corpse; and for impurity imparted by an olive-bulk of a corpse.
וְקַשְׁיָא לַן: עַל כְּזַיִת מִן הַמֵּת מְגַלֵּחַ, עַל הַמֵּת כּוּלּוֹ לֹא כׇּל שֶׁכֵּן? וְאָמַר רַבִּי יוֹחָנָן: לֹא נִצְרְכָא אֶלָּא לְנֵפֶל שֶׁלֹּא נִתְקַשְּׁרוּ אֵבָרָיו בְּגִידִין. אַלְמָא אִיסּוּר טוּמְאָה קָדֵים!
And this poses a difficulty for us: If a nazirite shaves for becoming impure from an olive-bulk of a corpse, is it not obvious that all the more so he must shave for becoming impure from an entire corpse? And Rabbi Yoḥanan said: It is necessary only with regard to a miscarried fetus whose limbs have not yet become joined to its sinews. Although the fetus does not yet contain an olive-bulk of flesh, since it is a complete entity, it transmits impurity to anything under the same roof. Evidently, the limbs of the body are formed before the nerves and sinews, and therefore the prohibition of eating non-kosher meat takes effect prior to the prohibition of the sciatic nerve.
אַף עַל גַּב דְּאִיסּוּר טוּמְאָה קָדֵים, אָתֵי אִיסּוּר גִּיד חָיֵיל עֲלֵיהּ, שֶׁכֵּן אִיסּוּרוֹ נוֹהֵג בִּבְנֵי נֹחַ.
The Gemara answers: Even though the prohibition of eating non-kosher meat takes effect prior to the prohibition of eating the sciatic nerve, the prohibition of the sciatic nerve also comes and takes effect upon a non-kosher animal because this prohibition applies to descendants of Noah, i.e., to gentiles. Since the prohibition of eating the sciatic nerve adds an additional stringency that did not exist with regard to non-kosher meat, it takes effect even though there was an already existing prohibition.
דַּיְקָא נָמֵי, דְּקָתָנֵי: אָמַר רַבִּי יְהוּדָה: וַהֲלֹא מִבְּנֵי יַעֲקֹב נֶאֱסַר גִּיד הַנָּשֶׁה, וַעֲדַיִין בְּהֵמָה טְמֵאָה מוּתֶּרֶת לָהֶם.
According to this answer, the language of the mishna is also precise, as it teaches: Rabbi Yehuda said: Wasn’t the sciatic nerve forbidden for the children of Jacob, as it is written: “Therefore the children of Israel eat not the sciatic nerve” (Genesis 32:33), yet the meat of a non-kosher animal was still permitted to them? This indicates that the basis of Rabbi Yehuda’s opinion is the fact that the sciatic nerve was forbidden to the children of Jacob, who had the status of descendants of Noah.
גּוּפָא: הָאוֹכֵל גִּיד הַנָּשֶׁה שֶׁל בְּהֵמָה טְמֵאָה – רַבִּי יְהוּדָה מְחַיֵּיב שְׁתַּיִם,
§ The Gemara returns to the matter itself cited above. With regard to one who eats the sciatic nerve of a non-kosher animal, Rabbi Yehuda deems him liable to receive two sets of lashes: One for eating the sciatic nerve and one for eating the meat of a non-kosher animal;
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