Leviticus 8:14-17

¹⁴And he took the ox of the sin-offering: and Aaron and his sons put their hands on the head of the ox,

¹⁵And he put it to death; and Moses took the blood and put it on the horns of the altar and round it with his finger, and made the altar clean, draining out the blood at the base of the altar; so he made it holy, taking away what was unclean.

¹⁶And he took all the fat on the inside parts, and the fat on the liver, and the two kidneys with their fat, to be burned on the altar;

¹⁷But the ox, with its skin and its flesh and its waste, was burned with fire outside the tent-circle, as the Lord gave orders to Moses.