Leviticus 7:30-32

³⁰His own hands shall bring it, as the fire-offerings of the Lord: the fat with the breast shall he bring, the breast that it may be waved for a wave-offering before the Lord.

³¹And the priest shall burn the fat upon the altar; but the breast shall belong to Aaron and to his sons.

³²And the right shoulder shall ye give unto the priest for a heave-offering, of the sacrifices of your peace-offerings.