Musannaf Ibn Abi Shayba 3:5432

7809. Abu Khalid narrated to us, from Ibn Ishaq, from Sa'id ibn Abi Sa'id, from Abu Murra, the freed slave of Umm Hani bint Abi Talib, from Umm Hani, that the Prophet, peace and blessings of Allah be upon him, prayed the Duha (forenoon) prayer as eight rak'ahs.