Leviticus 9:8-11

8So Aaron approached the altar and slaughtered the sin offering calf which was for himself.

9Then Aaron’s sons presented the blood to him and he dipped his finger in the blood and put it on the horns of the altar, and the rest of the blood he poured out at the base of the altar.

10The fat and the kidneys and the protruding lobe of the liver from the sin offering he offered up in smoke on the altar just as the Lord had commanded Moses,

11but the flesh and the hide he completely burned up outside the camp.