The Note by the Scientific

Ray is one of the most ancient civilization centers of Iran, with an antiquity of more than several thousands years. Its people have been described as a civilized nation with an advanced art. The city was captured in the year 22 After Hijrah by Moslems and its development started since then; so that before the attack of the Moguls (616 After Hijrah) it was one of the greatest and most developed Islamic cities with a population of over two million people ^۱ .
In the Islamic period, since the third and forth centuries, it possessed a rather powerful scientific seminary, from which a number of great Shiite and Sunnite characters were graduated. Among them, one can refer to: Thiqatulislam Kulayni (329 After Hijrah), Ibn Qibbah Razi (400 After Hijrah), Ibn Miskawayh (321 – 421 After Hijrah), Abu Hatam Razi (322 After Hijrah), Ibn Fars Razi (329 – 395 After Hijrah), Abu Bakr Razi (325 – 385 After Hijrah), Mohammad bin Zakariyya Razi (302 After Hijrah and etc.