Leviticus 7:29-32

29“Speak to the children of Israel, saying: ‘He who offers the sacrifice of his peace offering to the Lord shall bring his offering to the Lord from the sacrifice of his peace offering.

30His own hands shall bring the offerings made by fire to the Lord. The fat with the breast he shall bring, that the breast may be waved as a wave offering before the Lord.

31And the priest shall burn the fat on the altar, but the breast shall be Aaron’s and his sons’.

32Also the right thigh you shall give to the priest as a heave offering from the sacrifices of your peace offerings.