Leviticus 16:26-28

26The man who released the goat for an uninhabitable place is to wash his clothes and bathe his body with water; afterward he may reenter the camp.

27The bull for the sin offering and the goat for the sin offering, whose blood was brought into the most holy place to make atonement, must be brought outside the camp and their hide, flesh, and waste burned.

28The one who burns them is to wash his clothes and bathe himself with water; afterward he may reenter the camp.