Deuteronomy 5:13-14

Six days thou shalt labour and do all thy work, but the seventh day is the sabbath unto the LORD thy God; in it thou shalt not do any work, thou nor thy son nor thy daughter nor thy manslave nor thy maidslave nor thine ox nor thine ass nor any animal of thine nor thy stranger that is within thy gates, that thy manslave and thy maidslave may rest as well as thou.