Deuteronomy 24:17-19

17Thou shalt not pervert the judgment of the stranger, nor of the fatherless; nor take a widow’s raiment to pledge: 18But thou shalt remember that thou wast a bondman in Egypt, And Yhwh thy God redeemed thee thence: therefore I command thee to do this thing.

19When thou cuttest down thine harvest in thy field, and hast forgot a sheaf in the field, thou shalt not go again to fetch it: it shall be for the stranger, for the fatherless, and for the widow: that Yhwh thy God may bless thee in all the work of thine hands.