Deuteronomy 5:14; Deuteronomy 15:12; Deuteronomy 16:8

14 but the seventh day is a sabbath of the LORD your God; in it you shall not do any work, you or your son or your daughter or your male servant or your female servant or your ox or your donkey or any of your cattle or your sojourner who stays with you, so that your male servant and your female servant may rest as well as you.

12 "If your kinsman, a Hebrew man or woman, is sold to you, then he shall serve you six years, but in the seventh year you shall set him free.

8 "Six days you shall eat unleavened bread, and on the seventh day there shall be a solemn assembly to the LORD your God; you shall do no work on it.