The religious motivation Muslim conquest of the Sassanid era

Different theories have been investigated about how Iran was conquered by the Muslim Arabs and the Sassanid Empire collapsed. Among all the factors that have shaken the Iranian people throughout history, the invasion and entry of Arab Muslims into this land (the first half of the seventh century AD), has brought with it the greatest change. Why and how the Muslims were able to overthrow the great Sassanid empire and dominate all of Iran at that time for almost a century is a fundamental issue, and different views have been offered on the motives for this invasion. A group of extremist and anti-Islamic writers believe that the Arabs' goal in invading Iran was nothing more than the acquisition of booty, slaves and maids. Another group says that undoubtedly spiritual motives also played a very important role in this regard, and the main motivator of the Arabs in these attacks was the same spiritual and religious motive. This article tries to examine the religious and cultural motives of Muslims in attacking the territory of the great Sassanid Empire by using historical sources and knowledge as much as possible. According to the results, Muslims at the beginning of the conquest and invasion of Iran, in addition to economic and political motives, also had cultural and religious motives.