Deuteronomy 5:14

5:14 but the seventh day is the Sabbath of the Lord your God. On that day you must not do any work, you, your son, your daughter, your male slave, your female slave, your ox, your donkey, any other animal, or the foreigner who lives with you, so that your male and female slaves, like yourself, may have rest.

Deuteronomy 15:9

15:9 Be careful lest you entertain the wicked thought that the seventh year, the year of cancellation of debts, has almost arrived, and your attitude be wrong toward your impoverished fellow Israelite and you do not lend him anything; he will cry out to the Lord against you and you will be regarded as having sinned.