Leviticus 7:31-35

³¹The priest shall burn the fat on the altar; but the breast shall be Aaron`s and his sons`. ³²The right thigh shall you give to the priest for a heave-offering out of the sacrifices of your peace-offerings. ³³He among the sons of Aaron who offers the blood of the peace-offerings, and the fat, shall have the right thigh for a portion. ³⁴For the wave-breast and the heave-thigh have I taken of the children of Israel out of the sacrifices of their peace-offerings, and have given them to Aaron the priest and to his sons as [their] portion forever from the children of Israel.

³⁵This is the anointing-portion of Aaron, and the anointing-portion of his sons, out of the offerings of Yahweh made by fire, in the day when he presented them to minister to Yahweh in the priest`s office;