Hirmas bin Habib (who was a man of the desert) narrates from his grandfather (may Allah be pleased with him) that he said: I brought a debtor of mine to the Prophet (peace and blessings be upon him), and the Messenger of Allah (peace and blessings be upon him) said to me: "Keep hold of him." Then he said to me: "O young man of Banu Tamim! What do you intend to do with your captive?"
Hadith Referenceالسنن الكبرى للبيهقي / كتاب التفليس / 11286