Musnad Ahmad 1153:1619

'Abd al-Razzaq narrated to us, Ma'mar narrated to us, from al-Zuhri, from 'Urwah, from 'Aishah, who said: The Messenger of Allah (peace and blessings of Allah be upon him) used to pray at night while I was lying across between him and the Qiblah, like the lying of a funeral.