Kiddushin 53A

נמנו וגמרו: המקדש בחלקו, בין קדשי קדשים ובין קדשים קלים ⁠– לא קידש. ורב אמר: עדיין היא מחלוקת. אמר אביי: כוותיה דרבי יוחנן מסתברא,

They counted the opinions among the rabbis, and they concluded: With regard to one who betroths a woman with his portion of the offerings, whether he did so with offerings of the most sacred order or whether he used the offerings of lesser sanctity, he has not betrothed her, in accordance with the opinion of R' Yosei. And Rav says: It is still a matter of dispute and they did not reach that conclusion. Abaye said: It is reasonable to rule in accordance with the report of R' Yoḥanan, who says that the halakha was decided in accordance with the opinion of R' Yosei.

דתניא: מנין שאין חולקים מנחות כנגד זבחים ⁠– תלמוד לומר: ״וכל מנחה אשר תאפה בתנור... לכל בני אהרן תהיה״.

Abaye quotes an extended baraita indicating that even R' Yehuda accepted that the halakha was decided in accordance with the opinion of R' Yosei. As it is taught in a baraita: From where is it derived that priests may not receive a share of meal-offerings in exchange for portions of animal offerings, i.e., they may not exchange their portion of a meal-offering for the meat of an animal sacrifice of which they did not receive a portion? The verse states: “And every meal-offering that is baked in the oven…should all the sons of Aaron have” (Leviticus 7:9–10). This verse emphasizes that the sons of Aaron must divide the meal-offering equally among themselves, without exchanging it for a portion of any other offering.

יכול לא יחלקו מנחות כנגד זבחים, שלא קמו תחתיהם בדלות, אבל יחלקו מנחות כנגד עופות, שהרי קמו תחתיהן בדלות? תלמוד לומר: ״וכל נעשה במרחשת... לכל בני אהרן תהיה״.

The baraita continues: One might have thought that they may not receive a share of meal-offerings in exchange for portions of animal offerings since they do not substitute for them in the case of poverty. Even one who is too poor to afford to bring an animal offering, e.g., in the case of a sin-offering determined on a sliding scale, does not bring a meal-offering in its stead. Since meal-offerings can never be brought in place of animal offerings, there is clearly no connection between them. But perhaps they may receive a share of meal-offerings in exchange for portions of bird-offerings, since they do substitute for them in the case of poverty. If one is so destitute that he cannot afford to bring a bird-offering he brings a meal-offering. Therefore, the same verse states: “And all that is prepared in the deep pan…should all the sons of Aaron have,” again stressing that all must have an equal share in that meal-offering.