Neyshabur in the Third and Fourth Centuries ('AH')

Neyshabur is one of the four capitals of Great Khorasan and one of the ancient cities of Iran. It had a political and cultural importance in the early Islamic centuries. It was so important that some governments chose it as their capital. Its scientific and political status, Imam Reza is short visit to it and his narration of the "Gold Chain" tradition have added to its importance. This city enjoyed an important position in the first and second centuries ('AH') but the importance of this historical city increased in the third and fourth centuries ('AH'). The present paper tries to elaborate on Neyshabur's political importance, its conditions, the religion of its people, their customs, language, the conflicts and wars, its schools, its economic conditions, and religious sects of the city in the third and fourth centuries ('AH').