Sahih Muslim
The Book of Prayers (Kitab Al-Salat)
Book Number: 004 / Hadith Number: 1040
'A'isha reported: I was sleeping in front of the Mcsseinger ef Allah (may peace be upon him) with my legs between him and the Qibla. When he prostrated himself he pinched me and I drew up my legs, and when be stood up, I stretched them out. She said: At that time there were no lamps in the houses.