Leviticus 16:26-30

²⁶And he that letteth go the goat for Azazel shall wash his clothes, and bathe his flesh in water, and afterward he may come into the camp.

²⁷And the bullock of the sin-offering, and the goat of the sin-offering, whose blood was brought in to make atonement in the holy place, shall be carried forth without the camp; and they shall burn in the fire their skins, and their flesh, and their dung.

²⁸And he that burneth them shall wash his clothes, and bathe his flesh in water, and afterward he may come into the camp.

²⁹And it shall be a statute for ever unto you: in the seventh month, on the tenth day of the month, ye shall afflict your souls, and shall do no manner of work, the home-born, or the stranger that sojourneth among you.

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