abuaminaelias.com
Hadith on Mahdi: The Mahdi is a descendant of Fatimah bint Muhammad | Daily Hadith Online الحديث اليومي
Umm Salamah reported: The Messenger of Allah, peace and blessings be upon him, said, "The Mahdi will be from my offspring, among the descendants of Fatimah." Source: Sunan Abī Dāwūd 4284