Leviticus 16:22

He shall sprinkle some of the blood on it with his finger seven times, and cleanse it, and make it holy from the uncleanness of the children of Israel.

“When he has finished atoning for the Holy Place, the Tent of Meeting, and the altar, he shall present the live goat.

Aaron shall lay both his hands on the head of the live goat, and confess over him all the iniquities of the children of Israel, and all their transgressions, even all their sins; and he shall put them on the head of the goat, and shall send him away into the wilderness by the hand of a man who is ready.

“Aaron shall come into the Tent of Meeting, and shall take off the linen garments which he put on when he went into the Holy Place, and shall leave them there.

Then he shall bathe himself in water in a holy place, put on his garments, and come out and offer his burnt offering and the burnt offering of the people, and make atonement for himself and for the people.

The fat of the sin offering he shall burn on the altar.