Musannaf Ibn Abi Shayba 3:5436

Abu Khalid al-Ahmar narrated to us, from Ibn ‘Ajlan, from al-Qa‘qa‘ ibn Hakim, from his grandmother, Ramtha: She said: I entered the house of ‘Aisha, in which she used to seclude herself, and I saw her pray eight rak‘ahs of Duha in it.