Musannaf Ibn Abi Shayba 13:2821

Abu Bakr narrated to us, he said: Ibn ‘Ulayyah narrated to us, from Salamah ibn ‘Alqamah, from Ibn Sirin, who said: The judges used to rule that whoever sells something that does not belong to him, it belongs to its owner if he demands it. This is taken by way of purchase.