Ibn `Abbas said, "The Prophet (s.a.w.a.) slept till he snored and then prayed (or probably lay till his breath sounds were heard and then got up and prayed)." Ibn `Abbas added: "I stayed overnight in the house of my aunt, Maimuna, the Prophet (s.a.w.a.) slept for a part of the night, (See Fath al-Baari page 249, Vol. 1), and late in the night, he got up and performed ablution from a hanging water skin, a light (perfect) ablution and stood up for the prayer. I, too, performed a similar ablution, then I went and stood on his left. He drew me to his right and prayed as much as Allah wished, and again lay and slept till his breath sounds were heard. Later on the Mu'adh-dhin (call maker for the prayer) came to him and informed him that it was time for Prayer. The Prophet (s.a.w.a.) went with him for the prayer without performing a new ablution." (Sufyan said to `Amr that some people said, "The eyes of Allah's Messenger (s.a.w.a.) sleep but his heart does not sleep." `Amr replied, "I heard `Ubaid bin `Umar saying that the dreams of Prophets were Divine Inspiration, and then he recited the verse: 'I (Abraham) see in a dream, (O my son) that I offer you in sacrifice (to Allah)." (37.102) (See Hadith No. 183)

One night I slept at the house of (my aunt) Maimuna and the Prophet (S) was there on that night. He performed ablution and stood up for the prayer. I joined him and stood on his left side but he drew me to his right and prayed thirteen rak`at and then slept till I heard his breath sounds. And whenever he slept, he used to breathe with audible sounds. The Mu'adh-dhin came to the Prophet (S) and he went out and prayed the morning prayer) without repeating the ablution.

I slept (one night) in the house of Maimuna, the wife of the Messenger of Allah (S), and the Messenger of Allah (S) was with her that night. He (after sleeping for half of the night got up and) then performed ablution and then stood up and observed prayer. I too stood on his left side. He took hold of me and made me stand on his right side. He (the Holy Prophet) observed thirteen rak`ahs on that night. The Messenger of Allah (S) then slept and snored and it was a habit with him to snore while sleeping. The Mu'adhdhin then came to him (to inform him about the prayer). He then went out and observed prayer without performing ablution. (`Amr said: Bukair b. Ashajj had narrated it to me )