Musannaf Ibn Abi Shaybah

Hazrat Ibn Abbas (may Allah be pleased with both of them) narrates that once I was at night with my maternal aunt, Ummul Momineen Hazrat Maymunah. That night, the Messenger of Allah (peace and blessings be upon him) was also there with her. During the night, I saw that he got up and performed eleven or thirteen rak‘ahs (units of prayer).