Leviticus 9:8-11 - The Sin Offering For The Priests
8 Aaron came to the altar and slaughtered the calf as his own offering for sin. 9 Aaron's sons brought him the blood. He dipped his finger in the blood and put it on the horns of the altar. After that he poured out the blood at the bottom of the altar. 10 On the altar he burned the fat, kidneys, and lobe of the liver from the offering for sin as Jehovah commanded Moses. 11 He burned the meat and the skin outside the camp.