Deuteronomy:18:3-4
rsv@Deuteronomy:18:3 @ And this shall be the priests' due from the people, from those offering a sacrifice, whether it be ox or sheep: they shall give to the priest the shoulder and the two cheeks and the stomach.
rsv@Deuteronomy:18:4 @ The first fruits of your grain, of your wine and of your oil, and the first of the fleece of your sheep, you shall give him.