Leviticus 7:33-35

New Century Version

³³ it will belong to the priest who offers the blood and fat of the fellowship offering. ³⁴ I have taken the breast and the thigh from the fellowship offerings of the Israelites, and I have given these parts to Aaron and the priests as their share for all time from the Israelites.’”

³⁵ This is the portion that belongs to Aaron and his sons from the offerings made by fire to the Lord. They were given this share on the day they were presented to the Lord as priests.