Leviticus 9:8-11 - The Sin Offering For The Priests
8 So Aaron drew near to the altar, and killed the calf of the sin-offering, which was for himself. 9 And the sons of Aaron presented the blood to 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, 10 but he burnt the fat, and the kidneys, and the caul from the liver of the sin-offering, upon the altar, as LORD commanded Moses. 11 And he burnt the flesh and the skin with fire outside the camp.