Leviticus 8:14-17

14And he brought the bullock of the sin-offering: and Aaron and his sons laid their hands upon the head of the bullock of the sin-offering. 15And he slew it; and Moses took the blood, and put it upon the horns of the altar round about with his finger, and purified the altar, and poured out the blood at the base of the altar, and sanctified it, to make atonement for it. 16And he took all the fat that was upon the inwards, and the caul of the liver, and the two kidneys, and their fat; and Moses burned it upon the altar. 17But the bullock, and its skin, and its flesh, and its dung, he burnt with fire without the camp; as Jehovah commanded Moses.