Leviticus 16:28

26“He who lets the goat go as the scapegoat shall wash his clothes, and bathe his flesh in water, and afterward he shall 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 their skins, their flesh, and their dung with fire.

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

29“It shall be a statute to you forever: in the seventh month, on the tenth day of the month, you shall afflict your souls, and shall do no kind of work, whether native-born or a stranger who lives as a foreigner among you;

30for on this day shall atonement be made for you, to cleanse you. You shall be clean from all your sins before the LORD.