Deuteronomy 15:13-15

13And when thou lettest him go free from thee, thou shalt not let him go empty: 14thou shalt furnish him liberally out of thy flock, and out of thy threshing-floor, and out of thy winepress; as Jehovah thy God hath blessed thee thou shalt give unto him. 15And thou shalt remember that thou wast a bondman in the land of Egypt, and Jehovah thy God redeemed thee: therefore I command thee this thing to-day.