Musnad Abu Ya'la al-Mawsili 149:100

Umayyah ibn Bistam narrated to us, Yazid ibn Zuray' narrated to us, Habib al-Mu'allim narrated to us, from Hisham ibn 'Urwah, from his father, from 'Aishah: That the Prophet (peace and blessings of Allah be upon him) appointed Ibn Umm Maktum as a successor over Medina to lead the people in prayer.