Sahih Bukhari Volume 1, Book 8, Hadith Number 379

Narated By Abu Salama : ‘Aisha the wife of the Prophet said, “I used to sleep in front of Allah’s Apostle and my legs were opposite his Qibla and in prostration he pushed my legs and I withdrew then and when he stood, I stretched them.’ ‘Aisha added, “In those days the houses were without lights.”