Leviticus 16:24-28

24He is to bathe himself with water in a holy place, put on his garments, and come out to offer his burnt offering and the burnt offering of the people, to make atonement for himself and for the people.

25“Then he is to burn up fat of the sin offering in smoke on the altar.

26The man who leaves the goat as a scapegoat is to wash his clothes and bathe his body in water. Afterward he may come into the camp.

27“The bull for the sin offering and the goat for the sin offering, whose blood was brought in to make atonement in the Holy Place, shall be carried outside the camp, and their hides, their flesh, and their dung burned with fire.

28The one who burns them is to wash his clothes and bathe his body in water. Then afterward he may come into the camp.