Leviticus 9:8-10

Revised Standard Version

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 on the horns of the altar, and poured out the blood at the base of the altar; ¹⁰ but the fat and the kidneys and the appendage of the liver from the sin offering he burned upon the altar, as the Lord commanded Moses.