Musnad Ahmad 1153:1866

'Abd al-Razzaq narrated to us, he said: Malik and Ishaq—meaning Ibn 'Isa al-Taba'—narrated to us, he said: Malik informed us, from Abu al-Nadr, from Abu Salamah, from 'Aishah, who said: "I used to sleep in front of the Prophet, may Allah bless him and grant him peace, with my feet in the direction of his Qiblah. When he wanted to prostrate, he would nudge me, so I would draw back my feet. When he stood up, I would stretch them out." She said: "And there were no lamps in the houses in those days."