Deuteronomy 23:15-20

Don’t return a runaway slave to his master; he’s come to you for refuge. Let him live wherever he wishes within the protective gates of your city. Don’t take advantage of him. No daughter of Israel is to become a sacred prostitute; and no son of Israel is to become a sacred prostitute. And don’t bring the fee of a sacred whore or the earnings of a priest-pimp to the house of GOD, your God, to pay for any vow—they are both an abomination to GOD, your God. Don’t charge interest to your kinsmen on any loan: not for money or food or clothing or anything else that could earn interest. You may charge foreigners interest, but you may not charge your brothers interest; that way GOD, your God, will bless all the work that you take up and the land that you are entering to possess.