Leviticus 9:7-11

7And Moses said unto Aaron, Draw near unto the altar, and offer thy sin offering, and thy burnt offering, and make atonement for thyself, and for the people: and offer the oblation of the people, and make atonement for them; as the LORD commanded.

8So Aaron drew near unto the altar, and slew the calf of the sin offering, which was for himself.

9And the sons of Aaron presented the blood unto him: and he dipped his finger in the blood, and put it upon the horns of the altar, and poured out the blood at the base of the altar:

10but the fat, and the kidneys, and the caul from the liver of the sin offering, he burnt upon the altar; as the LORD commanded Moses.

11And the flesh and the skin he burnt with fire without the camp.