Deuteronomy 15:12-15

If a member of your community, whether a Hebrew man or a Hebrew woman, is sold to you and works for you six years, in the seventh year you shall set that person free. And when you send a male slave out from you a free person, you shall not send him out empty-handed. Provide liberally out of your flock, your threshing floor, and your wine press, thus giving to him some of the bounty with which the LORD your God has blessed you. Remember that you were a slave in the land of Egypt, and the LORD your God redeemed you; for this reason I lay this command upon you today.