It is narrated from Sayyiduna Usama bin Zaid (may Allah be pleased with him) that the Messenger of Allah (peace and blessings of Allah be upon him) arrived at a gathering where Abdullah bin Ubayy bin Salul was also present. And this incident took place before Abdullah bin Ubayy had expressed Islam. He said: "Do not cause us discomfort in our gatherings." Then the Prophet (peace and blessings of Allah be upon him) went to Sayyiduna Sa'd bin Ubadah (may Allah be pleased with him) and said to him: "O Sa'd! Did you not hear what Abu Hubab said?" By this, the Prophet (peace and blessings of Allah be upon him) meant Abdullah bin Ubayy bin Salul.