Musnad Ahmad 1153:1485

'Ali ibn 'Asim narrated to us, he said: Bard narrated to us, from al-Zuhri, from 'Urwah ibn al-Zubayr, from 'A'ishah, she said: "Our door was in the direction of the Qiblah of the mosque. I sought to open it while the Messenger of Allah, peace and blessings of Allah be upon him, was praying. So he walked until he opened it for me, then he returned to his place where he had been."