Deuteronomy 23:20

20 to a foreigner you may lend on interest; but to your brother you shall not lend on interest, that the LORD your God may bless you in all that you put your hand to, in the land where you go in to possess it.

Deuteronomy 23:20 In-Context

18 You shall not bring the hire of a prostitute, or the wages of a dog, into the house of the LORD your God for any vow: for even both these are an abomination to the LORD your God.
19 You shall not lend on interest to your brother; interest of money, interest of victuals, interest of anything that is lent on interest
20 to a foreigner you may lend on interest; but to your brother you shall not lend on interest, that the LORD your God may bless you in all that you put your hand to, in the land where you go in to possess it.
21 When you shall vow a vow to the LORD your God, you shall not be slack to pay it: for the LORD your God will surely require it of you; and it would be sin in you
22 But if you shall forbear to vow, it shall be no sin in you.
The Hebrew Names Version is in the public domain.