Leviticus 23:25-28

²⁵No work of labour shall you do, but offer an oblation before the Lord.

²⁶And the Lord spake with Mosheh, saying:

²⁷But on the tenth day of this seventh month shall be the Day of Atonement (Yoma de Kippuraia, the Day of Expiations); a holy convocation you shall have, and afflict (or humble) your souls and offer the oblation before the Lord.

²⁸And NO WORK may you do on that same day, for it is the Day of Atonement, to make an atonement for you before the Lord your God.