Leviticus 9:8-11

8So Aaron went to the altar and slaughtered the calf as a sin offering for himself.

9His sons brought him the blood, and he dipped his finger in it and put it on the horns of the altar. He poured out the rest of the blood at the base of the altar.

10Then he burned on the altar the fat, the kidneys, and the long lobe of the liver from the sin offering, just as the Lord had commanded Moses.

11The meat and the hide, however, he burned outside the camp.