 According to Shia Quran commentators, implicit references to the Mahdi can be found in the Quran.Twelver Shi'ites (as the main branch of Shia, which consists of 85% of all Shia Muslims) claim that their twelfth Imam, Muhammad al-Mahdi, who went into occultation around 256/873-874, is the promised Mahdi, who will appear before the day of Judgement, to restore justice and equity on earth.In Shia Islam, the Mahdi is associated with the belief in the occultation, that the Mahdi is a "hidden Imam" who has already been born and who will one day return alongside Jesus to fill the world with justice.