Chapter 1: The Book of Purification
It was narrated that 'Aishah said: "I used to sleep in front of the Messenger of Allah (ﷺ) and my feet were in the direction of his Qiblah. When he prostrated he nudged me and I drew up my feet, then when he stood up I stretched them out again. And there were no lamps in the houses at the time."
Sunan an-Nasa'i 168