Leviticus 16:26-30

The one who released the goat as the scapegoat shall wash his clothes and bathe his body with water; then afterward he shall come into the camp.

But the bull 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 taken outside the camp, and they shall burn their hides, their flesh, and their refuse in the fire.

Then the one who burns them shall wash his clothes and bathe his body with water; and afterward he shall come into the camp. An Annual Atonement

“This shall be a permanent statute for you: in the seventh month, on the tenth day of the month, you shall humble yourselves and not do any work, whether the native, or the stranger who resides among you;

for it is on this day that atonement shall be made for you to cleanse you; you will be clean from all your sins before the Lord.