Leviticus 16:27-31
English Standard Version
Chapter 16
27And the bull for the sin offering and the goat for the sin offering, whose blood was brought in to make atonement in the Holy Place, shall be carried outside the camp. Their skin and their flesh and their dung shall be burned up with fire. 28And he who burns them shall wash his clothes and bathe his body in water, and afterward he may come into the camp.
29"And it shall be a statute to you forever that in the seventh month, on the tenth day of the month, you shall afflict yourselves and shall do no work, either the native or the stranger who sojourns among you.
30For on this day shall atonement be made for you to cleanse you. You shall be clean before the Lord from all your sins.
31It is a Sabbath of solemn rest to you, and you shall afflict yourselves; it is a statute forever.