Leviticus 16:28

And he that let go the goat for the scapegoat shall wash his clothes, and bathe his flesh in water, and afterward come into the camp.

And the bullock [for] the sin offering, and the goat [for] the sin offering, whose blood was brought in to make atonement in the holy [place], shall [one] carry forth without the camp; and they shall burn in the fire their skins, and their flesh, and their dung.

And [this] shall be a statute for ever unto you: [that] in the seventh month, on the tenth [day] of the month, ye shall afflict your souls, and do no work at all, [whether it be] one of your own country, or a stranger that sojourneth among you:

For on that day shall [the priest] make an atonement for you, to cleanse you, [that] ye may be clean from all your sins before the LORD.