Zoroastrian Dari language
Zoroastrian Dari (Persian: دری زرتشتی), also known as the Bahdinan dialect (گویش بهدینان) and often simply known as Dari, is a Northwestern Iranian language, and specifically a variety of the Central Plateau languages. This language has been described as an ethnolect.
Source: Wikipedia — Zoroastrian Dari language (CC BY-SA 4.0)