Introduction

In its general sense, the “Fārsi” language is considered to be the same as the “Iranian” language and this term was used to indicate all the Iranian dialects by the writers of yore. Before the advent of Islam, the Fārsi language had spread throughout most parts of Asia. p Geographical Boundaries: Following the spread of Islam in Iran, the employment of the various Iranian dialects, including Dari, became the trend in places like Afghanistan, Pakistan, India, Iraq, Syria, Turkey, Oman, the Caucuses, China, and Central Asia. The Dari language was in use alongside the Pahlavi language from the Sassanian period. This language passed through various stages in the Islamic period and underwent major developments from the angles of form, structure, and contents and became the language of poetry and literature in the Islamic period in Iran and many literary works, both, in poetry came to be written in this language

* source: Ghamar, Aryan "Iran Entry" The Great Islamic Encyclopedia. Ed. Kazem Musavi Bojnourdi.Tehran: The Center of Great Islamic Encyclopaedia , 1989-, V.10 ,pp.564