Musannaf Ibn Abi Shayba 13:722

Abu Bakr narrated to us, he said: Shihab bin Muhammad al-Amiri narrated to us, from Uthman bin al-Aswad, from Mujahid, he said: I said to him: "If I have a dirham [owed] to a man, may I borrow a riding beast from him, or seek a favor from him?" He said: "There is no harm in that."