Leviticus 7:30-33

30His own hands shall bring Jehovah's offerings by fire, the fat with the breast shall he bring: the breast, that it may be waved as a wave-offering before Jehovah.

31And the priest shall burn the fat on the altar; and the breast shall be Aaron's and his sons'.

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

33He of the sons of Aaron that presenteth the blood of the peace-offerings, and the fat, shall have the right shoulder for [his] part.