Deuteronomy 15:12-15

If a Hebrew man or Hebrew woman was sold to you and has served you for six years, in the seventh year you must set him or her free, released into a free life. And when you set them free don’t send them off empty-handed. Provide them with some animals, plenty of bread and wine and oil. Load them with provisions from all the blessings with which GOD, your God, has blessed you. Don’t for a minute forget that you were once slaves in Egypt and GOD, your God, redeemed you from that slave world. For that reason, this day I command you to do this.