NET
21 “On six days you may labor, but on the seventh day you must rest; even at the time of plowing and of harvest you are to rest.
Darby
21 Six days shalt thou work, but on the seventh day thou shalt rest; in ploughing time and in harvest thou shalt rest.
KJV
21 Six days thou shalt work, but on the seventh day thou shalt rest: in earing time and in harvest thou shalt rest.