Leviticus 16:24-28

24He shall bathe his body with water in a holy place and put on his clothes, and come out and offer his burnt offering and that of the people, and make atonement for himself and for the people.

25And he shall offer up in smoke the fat of the sin offering on the altar.

26The man who released the goat as the [sin-bearing] scapegoat shall wash his clothes and bathe his body in water, and afterward he may come into the camp.

27The bull for the sin offering and the goat for the sin offering, whose blood was brought in to make atonement in the Holy Place (Holy of Holies), shall be taken outside the camp; their skins, their meat, and their waste shall be burned in the fire.

28Then he who burns them shall wash his clothes and bathe his body with water, and afterward he may come into the camp.