Life In Iran

It was this Persian Islam and Sufism which was brought to new areas and new peoples such as the Turks of Central Asia, the Ottoman Empire, and the Indian subcontinent. Among the major Iranian Muslims who cultivated Sufism and helped the spread of Islam through Sufism, one can mention Habib Ajami, Hallaj, Hasan Basri, Junayd Baghdadi, Bayazid Bastami, Maruf Karkhi, Abdul-Qadir Gilani, Moinuddin Chishti, Jalaluddin Rumi, Najmuddin Kubra, and Baha-ud-Din Naqshband Bukhari. Note should also be made of Abu Hanifa, the founder of the Hanafi school of thought which is followed by most Muslims today.
Arabic writer Ibn Khaldun has remarked that the sedentary culture which was necessary for the development of civilization was rooted in the Persian empire.
One of the main developments after the advent of Islam in Iran was the rise of the New Persian language as an important Indo-European language. The New Persian language was an evolution of Middle Persian, which in turn was derived from Old Persian. New Persian absorbed a considerable amount of Arabic vocabulary during this era, although the Arabic vocabulary that was Persianized often took a different meaning than the Arabic origin. In terms of contribution to the Arabic language, Iranians like Sibawayhi pioneered writing books of grammar of the Arabic language.
Culturally, Iranians preserved their language, while they used Arabic for scientific and philosophical discourses; this enabled them to reach a worldwide audience for the first time. After the 10th century, Persian, written in the modified Perso-Arabic script alongside Arabic, was used for scientific, philosophical, historical, mathematical, musical, and medical works, as important Iranian writers such as Nasir al-Din al-Tusi, Avicenna, Qotb al-Din Shirazi, Gurgani, Nasir Khusraw, Biruni, Abd al-Qadir Maraghi made contributions to Persian scientific writing.