Deuteronomy 15:3

15:3 You may exact payment from a foreigner, but whatever your fellow Israelite owes you, you must remit.

Deuteronomy 15:2

15:2 This is the nature of the cancellation: Every creditor must remit what he has loaned to another person; he must not force payment from his fellow Israelite, for it is to be recognized as “the Lord’s cancellation of debts.”