Leviticus 9:18-22

Then he slaughtered the ox and the ram, the sacrifice of peace offerings which was for the people; and Aaron’s sons brought the blood to him, and he sprinkled it around on the altar.

As for the portions of fat from the ox and from the ram, the fat tail, the fat covering, the kidneys, and the lobe of the liver,

they now placed the portions of fat on the breasts; and he offered them up in smoke on the altar.

But the breasts and the right thigh Aaron presented as a wave offering before the Lord, just as Moses had commanded.

Then Aaron lifted up his hands toward the people and blessed them, and he stepped down after making the sin offering, the burnt offering, and the peace offerings.