Leviticus 7:29-30

Speak unto the children of Israel, saying, He that offereth the sacrifice of his peace-offerings unto Jehovah shall bring his oblation unto Jehovah out of the sacrifice of his peace-offerings: his own hands shall bring the offerings of Jehovah made by fire; the fat with the breast shall he bring, that the breast may be waved for a wave-offering before Jehovah.