Sayyiduna Jabir bin Abdullah (may Allah be pleased with them both) narrates: Sayyiduna Abdullah bin Mas’ud (may Allah be pleased with him) entered the mosque while the Prophet (peace and blessings of Allah be upon him) was delivering the sermon. He sat beside Sayyiduna Ubayy bin Ka’b (may Allah be pleased with him). He asked him about something, or spoke to him about something, but Sayyiduna Ubayy (may Allah be pleased with him) did not answer him. Sayyiduna Abdullah bin Mas’ud (may Allah be pleased with him) thought perhaps Sayyiduna Ubayy bin Ka’b (may Allah be pleased with him) was upset about something. When the Prophet (peace and blessings of Allah be upon him) finished the prayer, Sayyiduna Abdullah bin Mas’ud (may Allah be pleased with him) said: O Ubayy! What is the reason you did not answer me? Sayyiduna Ubayy (may Allah be pleased with him) said: You did not join us in the Friday (congregation). Sayyiduna Abdullah (may Allah be pleased with him) asked: Why is that? Sayyiduna Ubayy (may Allah be pleased with him) said: The reason is that you spoke during the sermon of the Prophet (peace and blessings of Allah be upon him). So Sayyiduna Abdullah bin Mas’ud (may Allah be pleased with him) stood up and went to the Prophet (peace and blessings of Allah be upon him) and mentioned this matter before him. The Prophet (peace and blessings of Allah be upon him) said to him: Ubayy has spoken the truth; follow what Ubayy has said. These are the words as narrated by Abdul A’la.