From him, from Ahmad ibn Muhammad ibn Abi Nasr, who said: I asked Abul Hasan عليه السلام, peace be upon him, about the grave of (Sayyidah) Fatimah صلى الله عليه وعلى آله وسلم, peace be upon her. Imam عليه السلام said: “She صلى الله عليه وعلى آله وسلم was buried in her house, and when the Umayyads expanded the mosque, it became part of the mosque.”