[Pooya/Ali Commentary 7:181] Those who have been thoroughly purified by Allah (Ahzab: 33), the Ahl ul Bayt of the Holy Prophet, are the people who guide mankind with truth. Also refer to the commentary of al Baqarah: 143. Aqa Mahdi Puya says: Since the creation of man there had been and should always be a person, present in this world, to guide others with truth. In view of this fact the Holy Prophet has said: "Whosoever dies without recognising the Imam (guide) of his age (in order to follow his guidance) dies the death of an ignorant pagan." According to many authentic traditions this condition remains valid up to the reappearance of the last Imam of the house of the Holy Prophet, the al Qa-im, because after the Holy Prophet, the number of such persons was restricted to twelve by the Holy Prophet himself.