Qatida reported: I heard Anas as saying that the Companion of the Messenger of Allah (may peace be upon him) dozed off and then offered prayer and did not perform ablution. He (the narrator) said: I asked him if he had actually heard it from Anas. He said: By Allah. yes.
Anas reported: (The people) stood up for the night prayer when a man spoke forth: I need to say something. The Apostle of Allah (may peace be upon him) entered into secret conversation with him, till the people dozed off or some of the people (dozed off), and then they said the prayer.
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Volume:3 Book :3 (Menstruation)Number :733
Book: Menstruation 
Book of Belief