Musannaf Ibn Abi Shayba 3:4840

Waki’ narrated to us, he said: Hisham bin ‘Urwah narrated to us, from Abu Bakr bin Abi Mulaykah, that ‘Aishah emancipated a slave of hers [with a condition of freedom] after her death (tadbir), and he used to lead her in prayer during Ramadan [while reading] from the Mushaf.