Halakhah sa Levitico 6:23: Mishneh Torah, Negative Mitzvot & Sefer HaChinukh

That a priest who is unclean shall not eat of the heave-offering, as it is said, “Anyone of thy seed…. who is a leper or hath an issue…. he shall not eat of the holy things….” (Lev. 22:3-4).

To not eat from the meat of the sin-offerings processed inside: To not have the priests eat from the meat of the sin-offerings inside — meaning to say from those sin-offerings that were sprinkled on the inner altar that was in the Sanctuary, as it stated (Leviticus 6:23), “And any sin-offering the blood of which is brought to the Tent of Meeting to atone in the Holy shall not be eaten; it shall be burned with fire.” And the language of Sifra, Tzav 5:4 [is], “‘It shall be burned with fire’ — anything that requires burning, to [make] transgress a negative commandment for its eating.” The matter is well-known [and famous] and explicit in the verses [that] all the sin-offerings the blood of which required sprinkling inside — meaning to say, on the altar that was in the Sanctuary — were burned. And all the sin-offerings the blood of which was only sprinkled on the altar outside, were eaten. And about this is this verse stated, such that they not eat from any sin-offering, the law of which is with burning. And the details of the sin-offerings — which of them are burned and which of them are eaten is explicit in Scripture. And that which is not elucidated well in the verses is explained to us by our Sages, may their memory be blessed, in Zevachim. We have already said (Sefer HaChinukh 138), that we do not have any involvement in the details of the sacrifices. And this too — if it is eaten or if it is not eaten — is from their details.

Not to eat of the meal-offering brought by the priests, as it is said, “And every meal-offering for the priest shall be wholly offered up. It shall not be eaten” (Lev. 6:16).