It is narrated from Hazrat Jabir bin Samurah, may Allah be pleased with him, that I heard the Prophet, peace and blessings be upon him, saying during the Farewell Pilgrimage: "This religion will always prevail over its opponents; no one who opposes or separates from it will be able to harm it, until twelve caliphs have passed in my Ummah, all of whom will be from the Quraysh."