 In contrast, mainstream Sunnis believe the Mahdi will be named Muhammad, be a descendant of Muhammad, and will revive the faith, but will not necessarily be connected with the end of the world.The Shias accept some of the same "hadiths" used by Sunnis as part of the "sunnah" to argue their case.In addition, they consider the sayings of "Ahl al-Bayt" that are not attributed directly to Muhammad as hadiths.