In order to obtain an economic advantage, speakers are giving up their traditional language for the dominant language of Iran, standard new Persian. Parents intentionally do not transmit Dari to their children in order that they may have what is felt to be an advantage in school and in life.
https://en.wikipedia.org/wiki/Dari_language_(Zoroastrian)
The language known as Zoroastrian Dari is also referred to as 'Behdinâni' (language of the people of good religion) or pejorative yet common name, 'Gabri' (language of the infidels).
https://en.wikipedia.org/wiki/Dari_language_(Zoroastrian)
• Farsi is also spoken by people in Afghanistan, and Dari is a variety of Farsi. • Those who are scholars of Farsi say that the version of the Persian language spoken in Iran can be termed as western Persian or western Farsi whereas Dari, the language spoken in Afghanistan can be termed as the eastern variety of Farsi.
http://blogs.transparent.com/urdu/difference-between-dari-and-farsi/
Languages like Dari are transferring from a state of language maintenance, in which a language is being sustained in the face of pressure from a dominant culture, to language death, a state in which the language is no longer spoken.
https://en.wikipedia.org/wiki/Dari_language_(Zoroastrian)
Farsi Language History. Farsi, also known as Persian Language, is the most widely spoken member of the Iranian branch of the Indo-Iranian languages, a subfamily of the Indo-European languages.
https://www.todaytranslations.com/language-history/farsi
Dari vs Farsi. Persian is the language spoken in Iran and Afghanistan and in some other countries that had Persian cultural influences. In fact, Persian was the official language of the Muslim rulers in Indian subcontinent before the arrival of the British. Persian is also known as Dari or Farsi. In fact, Dari is the name of the language spoken by a majority of Afghan people, and it is also recognized by the Afghan government as its official language. Farsi is the language of the people of Iran, and it is also referred to as Persian language.
http://www.differencebetween.com/difference-between-dari-and-vs-farsi/
Roots of Farsi language. Farsi is a subgroup of West Iranian languages that include Dari and Tajik; the less closely related languages of Luri, Bakhtiari, and Kumzari; and the non-Persian dialects of Fars Province. West and East Iranian comprise the Iranian group of the Indo-Iranian branch of the Indo-European family of languages.
https://www.todaytranslations.com/language-history/farsi
Zoroastrian Dari (Persian: دری زرتشتی or گویش بهدینان‎‎ lit. Behdīnān dialect) is a Northwestern Iranian ethnolect spoken as a first language by an estimated 8,000 to 15,000 Zoroastrians in and around the cities of Yazd and Kerman in central Iran.
https://en.wikipedia.org/wiki/Dari_language_(Zoroastrian)
Persian is the language spoken in Iran and Afghanistan and in some other countries that had Persian cultural influences. In fact, Persian was the official language of the Muslim rulers in Indian subcontinent before the arrival of the British. Persian is also known as Dari or Farsi. In fact, Dari is the name of the language spoken by a majority of Afghan people, and it is also recognized by the Afghan government as its official language. Farsi is the language of the people of Iran, and it is also referred to as Persian language.
http://blogs.transparent.com/urdu/difference-between-dari-and-farsi/
For the variety of Persian language spoken in Afghanistan, see Dari language.
https://en.wikipedia.org/wiki/Dari_language_(Zoroastrian)
what is dari language
Dari is the name of the language spoken by a majority of Afghan people, and it is also recognized by the Afghan government as its official language. Dari language is the name of the language spoken by a majority of Afghan people and its official language. Dari language is the  name of the language spoken by a majority of Afghan people, and it is also recognized by the Afghan government as its official language. Dari language is the name of the language spoken by a majority of Afghan people and recognized by the Afghan government as its official language.