Leviticus 16:26-28

26And he who released the goat as the 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, shall be carried outside the camp. And they shall burn in the fire their skins, their flesh, and their offal.

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