Leviticus 16:28-29

²⁸And the man by whom they are burned is to have his clothing washed and his body bathed in water, and then he may come back to the tent-circle.

²⁹And let this be an order to you for ever: in the seventh month, on the tenth day, you are to keep yourselves from pleasure and do no sort of work, those who are Israelites by birth and those from other lands who are living among you: