Salam Aleykum, we know Imam Naser is Mohamed prophet's ( Peace be upon him) descendant in any way I believe this man as hadiths do not have to be all true and he does not has to be necessarily Mohammad ibn Abdullach or Muhamed AlAskary and etc....we should remember Mohammed (PBUH) when he was mentioned as Ahmad in Quran and someone did not believe him because of different pronounciation of his name in Quran....such people sent by Allah is a test for muslims whethet they will support him or not.?