Five Pillars of Islam The believer should be self-aware and examine their intentions in performing the pilgrimage. This should lead to constant striving for self-improvement. A pilgrimage made at any time other than the Hajj season is called an "Umrah", and while not mandatory is strongly recommended. Also, they make a pilgrimage to the holy city of Jerusalem in their alms-giving feast. Twelver Shia Islam has five Usul al-Din and ten Furu al-Din, i.e., the Shia Islamic beliefs and practices. The Twelver Shia Islam Usul al-Din, equivalent to a Shia Five Pillars, are all beliefs considered foundational to Islam, and thus classified a bit
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