Sixth Pillar of Islam Muslims believe there are precisely five pillars of Islam, since in a hadith, Muhammad listed only five major pillars of the faith. Traditionalists say that no sixth pillar should be added, because changing the pillars would be altering the religion and its beliefs, therefore one who believes that there is a sixth pillar is committing a sin. Thus, Sunnis believe that a "six pillar of faith" is outside the folds of mainstream Islam. The sixth pillar of Islam is not included in the Sunni way of life. Also, a minority among Sunni scholars sometimes refers to the duty of jihad
Muslim conquest of Persia were Sunni Muslims, though today Iran is known as a stronghold of the Shi'a Muslim faith, recognizing Islam as their religion and the prophet's son in law, Ali as an enduring symbol of justice. According to Amoretti in Cambridge History of Islam, the Arab conquerors brought with them a new religion and a new language, but they did not use force to spread it. While giving freedom of choice, however, the Arab conquerors designated privileges for those who converted. During the Rashidun Caliphate, the official language of Persia (including Mesopotamia) remained Middle Persian (Pahlavi), just as the official languages of