Leviticus 8:13-16

¹³And Moses brought near the sons of Aaron, and clothed them with coats, and girded them with girdles, and bound the bonnets on them; as the Lord had commanded Moses.

¹⁴And he brought near 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 some one slew him; and Moses took the blood, and put it upon the horns of the altar round about with his finger, and purified the altar, and the remaining blood he poured out at the bottom of the altar, and sanctified it, to make henceforth atonement upon it.

¹⁶And he took all the fat that was upon the inwards, and the midriff of the liver, and the two kidneys, and their fat, and Moses burnt them upon the altar.