Leviticus 9:8-10

Darby Translation

⁸ And Aaron went to the altar and slaughtered 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 bottom of the altar.

¹⁰ And the fat, and the kidneys, and the net above the liver, of the sin-offering, he burned on the altar, as Jehovah had commanded Moses.