The term 'Certain Moslem' refers to a Shia Muslim, which is a branch of Islam that follows the teachings of the Prophet Muhammad's son-in-law, Ali. Shia Muslims believe that Ali was the rightful successor to Muhammad and that his descendants should have been the rightful leaders of the Islamic faith. They also believe in the concept of Imamah, which is the belief that only certain individuals are qualified to lead the Islamic community.