Musnad Abu Ya'la al-Mawsili 149:50

Ghassan ibn al-Rabi' narrated to us, from Thabit—meaning ibn Yazid—from Bard, from al-Zuhri, from 'Urwah, from 'Aishah, who said: I sought to open the door while the Prophet, peace and blessings of Allah be upon him, was performing a voluntary prayer, and the door was in the direction of the Qiblah. So the Prophet, peace and blessings of Allah be upon him, walked to his right or to his left until he opened the door, then he returned to his prayer.