Leviticus 16:28

25 And the fat of the sin-offering shall he burn upon the altar.

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

27 And 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.

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

29 And 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:

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

31 It is a sabbath of solemn rest unto you, and ye shall afflict your souls; it is a statute for ever.