Sahih Adab al-Mufrad

653/846 From Usama ibn Zayd: "The Messenger of Allah, peace and blessings be upon him, came upon a gathering in which was Abdullah ibn Ubayy ibn Salul, and that was before Abdullah ibn Ubayy had accepted Islam. He said: 'Do not harm us in our gathering!' Then the Prophet, peace and blessings be upon him, entered upon Sa'd ibn Ubadah and said: 'O Sa'd! Do you not hear what Abu Hubab says?!'—meaning Abdullah ibn Ubayy ibn Salul(1)."