When you reap your harvest in your field, and have forgotten a sheaf in the field, you shall not go again to get it: it shall be for the stranger, for the fatherless, and for the widow: that the LORD your God may bless you in all the work of your hands.
And remember that you were a servant in the land of Egypt, and that the LORD your God brought you out from there by a mighty hand and by an outstretched arm: therefore the LORD your God commanded you to keep the sabbath day.