Leviticus 16:25-17:7

The fat of the sin offering he shall turn into smoke on the altar. He who set the Azazel-goat free shall wash his clothes and bathe his body in water; after that he may reenter the camp. The bull of sin offering and the goat of sin offering whose blood was brought in to purge the Shrine shall be taken outside the camp; and their hides, flesh, and dung shall be consumed in fire. He who burned them shall wash his clothes and bathe his body in water; after that he may re-enter the camp. And this shall be to you a law for all time: In the seventh month, on the tenth day of the month, you shall practice self-denial; and you shall do no manner of work, neither the citizen nor the alien who resides among you. For on this day atonement shall be made for you to cleanse you of all your sins; you shall be clean before the Lord. It shall be a sabbath of complete rest for you, and you shall practice self-denial; it is a law for all time. The priest who has been anointed and ordained to serve as priest in place of his father shall make expiation. He shall put on the linen vestments, the sacral vestments. He shall purge the innermost Shrine; he shall purge the Tent of Meeting and the altar; and he shall make expiation for the priests and for all the people of the congregation. This shall be to you a law for all time: to make atonement for the Israelites for all their sins once a year. And Moses did as the Lord had commanded him. The Lord spoke to Moses, saying: Speak to Aaron and his sons and to all the Israelite people and say to them: This is what the Lord has commanded: if anyone of the house of Israel slaughters an ox or sheep or goat in the camp, or does so outside the camp, and does not bring it to the entrance of the Tent of Meeting to present it as an offering to the Lord, before the Lord's Tabernacle, bloodguilt shall be imputed to that man: he has shed blood; that man shall be cut off from among his people. This is in order that the Israelites may bring the sacrifices which they have been making in the open--that they may bring them before the Lord, to the priest, at the entrance of the Tent of Meeting, and offer them as sacrifices of well-being to the Lord; that the priest may dash the blood against the altar of the Lord at the entrance of the Tent of Meeting, and turn the fat into smoke as a pleasing odor to the Lord; and that they may offer their sacrifices no more to the goat-demons after whom they stray. This shall be to them a law for all time, throughout the ages.