Musannaf Ibn Abi Shayba 13:2942

Abu Bakr narrated to us, he said: Mu'tamir narrated to us, from Muhammad ibn Fada, from his father, from Alqama ibn Abdullah, from his father, who said: The Messenger of Allah (may Allah bless him and grant him peace) forbade the breaking of the currency of the Muslims that is current among them, unless there is a necessity.