Musannaf Ibn Abi Shayba 13:377

'Abbad ibn al-'Awwam narrated to us, from Sufyan ibn Husayn, who said: I heard al-Hasan, and a man asked him. He said: "I am the worker, so you give me and you authorize me." He said: "Take it, may you have no father (an expression of encouragement), go."