Sahih al-Bukhari Book 10, Hadith 93
One night I slept at the house of (my aunt) Maimuna and the Prophet (ﷺ) 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 (ﷺ) and he went out
and prayed the morning prayer) without repeating the ablution.
Once I passed the night in the house of my aunt Maimuna. Allah's Messenger (ﷺ) offered the `Isha' prayer and then came to the house and offered four rak`at an slept. Later on, he woke up and stood for the prayer and I stood on his left side. He drew me to his right and prayed five rak`at and then two. He then slept till I heard him snoring (or heard his breath sounds). Afterwards he went out for the morning prayer.
Once I passed the night in the house of my aunt Maimuna. The Prophet (ﷺ) stood for the night prayer and I joined him and stood on his left side but he drew me to his right by holding me by the head.