Leviticus 9:7-11

7Moses told Aaron, “Come to the altar and sacrifice an offering for sin and a burnt offering to make peace with the Lord for your sins and the sins of the people. Also make an offering for the people, to make peace with the Lord for them as the Lord commanded.”

8Aaron came to the altar and slaughtered the calf as his own offering for sin.

9Aaron’s sons brought him the blood. He dipped his finger in the blood and put it on the horns of the altar. Then he poured out the blood at the bottom of the altar.

10On the altar he burned the fat, kidneys, and lobe of the liver from the offering for sin as the Lord had commanded Moses.

11He burned the meat and the skin outside the camp.