Deuteronomy 23:19

19 You shall not charge interest on loans to another Israelite, interest on money, interest on provisions, interest on anything that is lent

Deuteronomy 23:19 In-Context

17 None of the daughters of Israel shall be a temple prostitute; none of the sons of Israel shall be a temple prostitute.
18 You shall not bring the fee of a prostitute or the wages of a male prostitute into the house of the Lord your God in payment for any vow, for both of these are abhorrent to the Lord your God.
19 You shall not charge interest on loans to another Israelite, interest on money, interest on provisions, interest on anything that is lent
20 On loans to a foreigner you may charge interest, but on loans to another Israelite you may not charge interest, so that the Lord your God may bless you in all your undertakings in the land that you are about to enter and possess.
21 If you make a vow to the Lord your God, do not postpone fulfilling it; for the Lord your God will surely require it of you, and you would incur guilt
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.