The greatest missionary whose personality wielded the most extraordinary influence in the spread of Islam in Kashmir was
Mir Sayyid Ali Hamadani of Hamadan (Persia) popularly known as Shah-i-Hamadan. He belonged to the Kubrawi order of Sufis and came to Kashmir along with seven hundred disciples and helpers. His emphasis was on the Islamization of royal family and the court as a pre-requisite for Islamizing people. This was an important modus operandi adopted by Syed Ali and his deciples. He was of the firm belief that the common masses followed the conduct and culture of their rulers. His disciples established shrines with lodging and langar at many places in Kashmir which served as centres for propagation of Islam. His preaching resulted in a colossal number of Kashmiri people and priests of the aforementioned religions along with thousands of their followers converting to Islam which became the vastly dominant religion of the Kashmiri masses by the fourteenth century. Mir Sayyid Ali Hamadani's impact in Kashmir was not only confined to religion but had a great say on culture, industry and economy of Kashmir. Spread of shawl making, carpet manufacturing, cloth weaving, etc. gained great prominence by his efforts.