Keritot 26B

בנשיא שעשוי להשתנות!

the same with regard to a Nasi, whose offering is apt to change if he leaves his position, e.g., when he becomes impure as a metzora (see Horayot 10a), as in such a case he brings the sin offering of an individual?

אלא אמר אביי, מהכא: מכדי ״מצות״ ״מצות״ ילפי מהדדי,

Rather, Abaye said: The halakha that Yom Kippur does not atone for one who is liable to bring a sin offering can be derived from here: Since there is a verbal analogy between the word “mitzvot” mentioned with regard to the sin offerings of an individual and the word “mitzvot” mentioned with regard to a Nasi and with regard to the community, the halakhot of these 3 cases are derived from one another.

כיון דילפי מהדדי, למה לי דכתיב שלש ידיעות גבי יחיד וגבי נשיא וגבי צבור? אם אינו ענין לגופיהן, דהא גמרי להון ״מצות״ ״מצות״, תנהו ענין היכא דמתיידע ליה בתר יום הכיפורים הוא דמייתי חטאת.

And since the halakhot of these cases are derived from one another, why do I need a term of knowing to be written 3 separate times, with regard to an individual, and with regard to a Nasi, and with regard to the community? If this term of knowing is not necessary for the matters of these sin offerings themselves, to teach that one brings a sin offering only for a known sin, as this is already derived from the verbal analogy of “mitzvot” and “mitzvot,” apply it to the matter of a case where his sin becomes known to him only after Yom Kippur. The halakha in that case would therefore be that he brings a sin offering.

אימא כי מתיידע ליה בתר יום כפורים הוא דמייתי חטאת, משום דיום הכפורים לאו על הדין חטא קא אתי, אבל אשם תלוי, דעל הדין חטא קאתי, אימא הכי נמי דמיכפר, דכי מתיידע [ליה] לבתר דקא מייתי אשם תלוי לא מייתי חטאת.

The Talmud raises a difficulty: But say that it is only when his sin becomes known to him after Yom Kippur that he brings a sin offering, because Yom Kippur did not come to atone for that specific sin. But with regard to a provisional guilt offering, which comes to atone for that specific sin, say indeed that he has achieved atonement. Therefore, if his sin becomes known to him after he brought a provisional guilt offering he should not bring a sin offering.