Leviticus 7:29-31

29 Speak to the children of Israel, saying, He that offers the sacrifice of his peace offerings to the LORD shall bring his oblation to the LORD of the sacrifice of his peace offerings.

30 His own hands shall bring the offerings of the LORD made by fire, the fat with the breast, it shall he bring, that the breast may be waved for a wave offering before the LORD.

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