Leviticus 7:34-36

34For the breast of the wave offering and the thigh of the heave offering I have taken from the children of Israel, from the sacrifices of their peace offerings, and I have given them to Aaron the priest and to his sons from the children of Israel by a statute forever.’ ”

35This is the consecrated portion for Aaron and his sons, from the offerings made by fire to the Lord, on the day when Moses presented them to minister to the Lord as priests.

36The Lord commanded this to be given to them by the children of Israel, on the day that He anointed them, by a statute forever throughout their generations.