Leviticus 9:17-21

¹⁷He presented the grain offering; he filled his hand with it and burned it on the altar, along with the morning's burnt offering.

¹⁸He killed also the ox and the ram, the sacrifice for the peace offering, which was for the people. Aaron's sons gave him the blood, which he sprinkled against every side of the altar.

¹⁹However, they cut out the fat of the bull and the ram, the fat tail, the fat that covers the inner parts, the kidneys, and the covering of the liver.

²⁰They took the parts that were cut out and put these on the breasts, and then Aaron burned the fat on the altar.

²¹Aaron waved the breasts and the right thigh as a wave offering before Yahweh, as Moses had commanded.