Leviticus 23:31-33

Young's Literal Translation

³¹ ye do no work -- a statute age-during to your generations in all your dwellings.

³² It [is] a sabbath of rest to you, and ye have humbled yourselves in the ninth of the month at even; from evening till evening ye do keep your sabbath.'

³³ And Jehovah speaketh unto Moses, saying,