Deuteronomy 24:12-15

ASV(i) 12 And if he be a poor man, thou shalt not sleep with his pledge; 13 thou shalt surely restore to him the pledge when the sun goeth down, that he may sleep in his garment, and bless thee: and it shall be righteousness unto thee before Jehovah thy God.
14 Thou shalt not oppress a hired servant that is poor and needy, whether he be of thy brethren, or of thy sojourners that are in thy land within thy gates: 15 in his day thou shalt give him his hire, neither shall the sun go down upon it (for he is poor, and setteth his heart upon it); lest he cry against thee unto Jehovah, and it be sin unto thee.