Chagigah 21

האונן ומחוסר כפורים צריכין טבילה לקדש אבל לא לתרומה:

An acute mourner [onen], i.e., someone who has experienced the loss of a close relative on that day, who had not come into contact with the deceased; and one who is lacking atonement, i.e., someone who still needs to bring an offering to complete his purification procedure, such as a zav or a woman after childbirth, both require immersion in order to eat sacrificial food. The onen would immerse after the day has passed and the one lacking atonement would immerse after the requisite offering is brought. However, immersion in these cases is not necessary for eating teruma.

גמ׳ בקדש מאי טעמא לא אמר רבי אילא מפני שכבידו של כלי חוצץ

GEMARA: It is taught in the mishna that one may not immerse one vessel inside another if they will be used for sacrificial food, though this may be done for teruma. The Gemara asks: With regard to sacrificial food, what is the reason that one may not immerse vessels in this manner? Rabbi Ila said: Because the weight of the inner vessel causes an interposition between the water and the vessels. That is, the innermost vessel weighs down on the bottom one, not allowing the water to reach the two vessels’ point of contact.

והא מדסיפא משום חציצה רישא לאו משום חציצה דקתני סיפא ולא כמדת הקדש מדת התרומה שבקדש מתיר ומנגיב ומטביל ואחר כך קושר ובתרומה קושר ואחר כך מטביל

The Gemara poses a question on this explanation: But is it not so that since the latter clause of the mishna mentions that sacrificial foods and teruma differ with regard to matters of interposition, the first clause of the mishna must not be with regard to matters of interposition, but is referring to a different consideration? As it teaches in the latter part of the mishna: The characteristics of teruma are not like the characteristics of sacrificial food, as in the case of sacrificial food, if one has a garment or vessel that is tied up he must untie it and dry it, and he may then immerse them, and afterward he may tie them up again if he wishes; but with regard to teruma he may tie up the garment and then immerse it. This latter clause shows that there the Sages were concerned for any possibility of interposition with regard to sacrificial food, so most likely the earlier clause of the mishna is due to a different reason.

רישא וסיפא משום חציצה וצריכא דאי אשמעינן רישא הוה אמינא היינו טעמא דלקדש לא משום כבידו של כלי דאיכא אבל סיפא דליכא כבידו של כלי אימא לקדש נמי לא הוי חציצה ואי אשמעינן סיפא הוה אמינא היינו טעמא דלקדש לא משום

The Gemara answers: No, this is not necessarily so. In both the first clause and the latter clause of the mishna the concern is due to interposition, and it is nevertheless necessary to teach us both cases. For had the mishna taught us only the first clause, i.e., that one may not immerse one vessel within another, I would have said that this is the reason one may not do so for sacrificial food: Because there is the weight of the interior vessel that must be taken into account. But in the latter clause, where there is no weight of a vessel to be considered, I will say that it is not considered an interposition for sacrificial food either. And had it taught us only the latter clause dealing with the knotted garments, I would have said that this is the reason one may not do so for sacrificial food: Because it is possible

דקיטרא במיא אהדוקי מיהדק אבל רישא דמיא אקפויי מקפו ליה למנא לא הויא חציצה צריכא

that it is the nature of knots to tighten even more in water, creating an interposition that bars the water from entering all the way, but in the case of the first clause of the mishna, which deals with one vessel inside another and where water by nature causes the top vessel to lighten and float away from the lower vessel rather than weigh down on it, I would have said that it is not considered an interposition. It is therefore necessary for the halakha to be stated in both cases.

רבי אילא לטעמיה דאמר רבי אילא אמר רבי חנינא בר פפא עשר מעלות שנו כאן חמש ראשונות בין לקדש בין לחולין שנעשו על טהרת הקדש אחרונות לקדש אבל לא לחולין שנעשו על טהרת הקדש

The Gemara comments: Rabbi Ila here conforms to his standard line of reasoning in considering these two issues as one, as Rabbi Ila said that Rabbi Ḥanina bar Pappa said: They taught ten stringencies of sacrificial food here in this mishna, rather than the apparent eleven. The first five stringencies apply both to the sacrificial foods themselves and to non-sacred food that was prepared according to the standards of purity of sacrificial food, whereas the last five apply only to actual sacrificial food but not to non-sacred food that was prepared according to the standards of purity of sacrificial food. The fact that Rabbi Ila counts only ten cases in the mishna shows that he considered the two cases discussed above to be of the same category, and therefore they are counted together as one stringency.

מאי טעמא חמש קמייתא דאית להו דררא דטומאה מדאורייתא גזרו בהו רבנן בין לקדש בין לחולין שנעשו על טהרת הקדש בתרייתא דלית להו דררא דטומאה מדאורייתא גזרו בהו רבנן לקדש לחולין שנעשו על טהרת הקדש לא גזרו בהו רבנן

The Gemara explains Rabbi Ila’s statement. What is the reason for this distinction? With regard to the first five stringencies, which have a connection to impurity as defined by Torah law because ignoring them can lead to a case of impurity by Torah law as opposed to merely rabbinic law, the Sages decreed these stringencies both for actual sacrificial food and for non-sacred food prepared according to the standards of purity of sacrificial food. However, with regard to the last five, which do not have a connection to impurity by Torah law, as their entire impurity is based on a rabbinic decree, the Sages decreed these stringencies only for actual sacrificial food. But with regard to non-sacred food made according to the standards of purity of sacrificial food, the Sages did not decree these stringencies for such foods.

רבא אמר מדסיפא הוי משום חציצה רישא לאו משום חציצה ורישא היינו טעמא גזירה שלא יטביל מחטין וצינורות בכלי שאין בפיו כשפופרת הנוד כדתנן עירוב מקוואות כשפופרת הנוד כעוביה

Rava disagreed with Rabbi Ila. He said that since the reason for the stringency in the latter clause is due to concern for interposition, this implies that the reason for the stringency in the first clause is not due to interposition, but to a different reason. And with regard to the stringency in the first clause that one may not immerse one vessel within another, this is the reasoning: It is a rabbinic decree to ensure that one not immerse small vessels, such as needles and hooks, inside a vessel whose mouth is less than the width of the tube of a wineskin. In such a case the water in the bottle would not be considered attached to the rest of the ritual bath, as we learned in a mishna (Mikvaot 6:7): The joining of different bodies of water in cases of ritual baths takes place if the opening between the two bodies is at least as wide as the width of the tube of a wineskin, counting both the thickness of the wall of the tube