It has been narrated on the authority of Aswad b. Qais who said: I heard Jundub b. Sufyan say: The Messenger of Allah (may peace be upon him) fell ill and did not wake up for two or three nights (for prayers) A woman came to him and said: Muhammad, I hope that your satan has left you. I haven't seen him approach you for two or three nights. The narrator says: At this, Allah, the Glorious and Exalted, revealed:" By the Glorious......"