Leviticus 7:30-33

30His own hands shall bring the offerings of the LORD made by fire, the fat with the breast, that shall he bring, that the breast may be waved for a wave offering before the LORD. 31And the priest shall burn the fat upon the altar: but the breast shall be Aaron’s and his sons’. 32And the right shoulder shall ye give to the priest for an heave offering of the sacrifices of your peace offerings. 33He among the sons of Aaron, that offereth the blood of the peace offerings, and the fat, shall have the right shoulder for his part.