Leviticus 25:37

37 You shall not lend them your money at interest taken in advance, or provide them food at a profit.

Leviticus 25:37 In-Context

35 If any of your kin fall into difficulty and become dependent on you, you shall support them; they shall live with you as though resident aliens.
36 Do not take interest in advance or otherwise make a profit from them, but fear your God; let them live with you.
37 You shall not lend them your money at interest taken in advance, or provide them food at a profit.
38 I am the Lord your God, who brought you out of the land of Egypt, to give you the land of Canaan, to be your God.
39 If any who are dependent on you become so impoverished that they sell themselves to you, you shall not make them serve as slaves.
New Revised Standard Version Bible, copyright 1989, Division of Christian Education of the National Council of the Churches of Christ in the United States of America. Used by permission. All rights reserved.