Leviticus 9:16-20

He also presented the burnt offering, and offered it according to the ordinance.

Next he presented the grain offering, and filled his hand with some of it and offered it up in smoke on the altar, besides the burnt offering of the morning.

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.