Mustafa Haidari is multilingual and he speaks both Pashto and Dari languages. Pashto which can also be spelled as Pashtu is one of the two formal languages in Afghanistan, and almost 50 percent of Afghans speaks it.
Not only in Afghanistan, but the tribal area of the neighboring country Pakistan also speaks Pashto. However the accent of Pashto speakers in Pakistan is different from the Afghans because the Pakistani Pashtu speakers use a mix of English and Urdu words in their conversations.