Leviticus 7:31-35

³¹'And the priest hath made perfume with the fat on the altar, and the breast hath been Aaron's and his sons;

³²and the right leg ye do make a heave-offering to the priest of the sacrifices of your peace-offerings;

³³he of the sons of Aaron who is bringing near the blood of the peace-offerings, and the fat, his is the right leg for a portion.

³⁴'For the breast of the wave-offering, and the leg of the heave-offering, I have taken from the sons of Israel, from the sacrifices of their peace-offerings, and I give them to Aaron the priest, and to his sons, by a statute age-during, from the sons of Israel.'

³⁵This is the anointing of Aaron, and the anointing of his sons out of the fire-offerings of Jehovah, in the day he hath brought them near to act as priest to Jehovah,