Musnad Abu Ya'la al-Mawsili 150:174

Abu Ma'mar narrated to us, Abu Sufyan al-Ma'mari narrated to us, from Ma'mar, from al-Zuhri, from 'Urwah, from 'Aishah: That the Messenger of Allah (ﷺ) ordered the closing of the doors, except for the door of Abu Bakr or the small door (khawkha) of Abu Bakr. She said: And 'Aishah said: I did not reach my parents except while they were both professing this religion.