It is narrated from Sayyiduna Ubayy bin Ka'b (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) recited Surah At-Tawbah on the day of Jumu'ah while he was standing and was admonishing and advising with the blessings of Allah Almighty. Sayyiduna Ubayy bin Ka'b, Sayyiduna Abu Darda, and Sayyiduna Abu Dharr (may Allah be pleased with them) were sitting in front of him (peace and blessings be upon him). (Of the latter two companions) one pressed Sayyiduna Ubayy bin Ka'b (may Allah be pleased with him) and asked: "Ubayy! When was this Surah revealed? I have only heard it today." In response, he gestured for silence. When they finished (the Jumu'ah), that companion said: "I had asked you when this Surah was revealed, but you did not tell me anything." This time Sayyiduna Ubayy (may Allah be pleased with him) said: "Today you have gained nothing from your prayer except that which you engaged in idle talk." Hearing this, I went to the Messenger of Allah (peace and blessings be upon him) and mentioned the whole matter including Ubayy's statement. The Prophet (peace and blessings be upon him) said: "Ubayy has spoken the truth."