It was narrated that Ibn ‘Abbas (رضي الله عنه) said:

I stayed over-night with my maternal aunt Maimoonah, the wife of the Prophet (ﷺ). The Messenger of Allah (ﷺ) prayed Isha', then he came and prayed four (rak'ahs), then he slept. Then he got up and prayed four (rak'ahs), then he said: "Has the little boy gone to sleep?" or words to that effect. Then I came and stood on his left, and he made me stand on his right. Then he prayed five rak'ahs, then two, then he went to sleep until I could hear him breathing deeply. Then he went out for the prayer.