Leviticus 16:26-30

²⁶But he that hath let go the emissary goat, shall wash his clothes, and his body with water, and so shall enter into the camp.

²⁷But the calf and the buck goat, that were sacrificed for sin, and whose blood was carried into the sanctuary, to accomplish the atonement, they shall carry forth without the camp, and shall burn with fire, their skins and their flesh, and their dung:

²⁸And whosoever burneth them shall wash his clothes, and flesh with water, and so shall enter into the camp.

²⁹And this shall be to you an everlasting ordinance: The seventh month, the tenth day of the month, you shall afflict your souls, and shall do no work, whether it be one of your own country, or a stranger that sojourneth among you.

³⁰Upon this day shall be the expiation for you, and the cleansing from all your sins: you shall be cleansed before the Lord.