Deuteronomy 18:3
And this shall be the priest's due from the people, from them that offer a sacrifice, whether ox or sheep; and they shall give to the priest the shoulder, and the two cheeks, and the maw.And this shall be the priest's due from the people, from them that offer a sacrifice, whether ox or sheep; and they shall give to the priest the shoulder, and the two cheeks, and the maw.