Musannaf Ibn Abi Shayba 19:854

Abu Bakr narrated to us, he said: Muhammad ibn Bakr narrated to us, from Ibn Jurayj, he said: Ziyad informed me that Ibn Shihab informed him, he said: Safwan ibn al-Mu'attal struck Hassan ibn al-Fura'ah with a sword because of a satire he had satirized him with. The Messenger of Allah, may Allah bless him and grant him peace, did not cut off his hand.