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The Habibzai is a Pashtun tribe, one of the septs of Popalzai clan. The Habibzai descend from Popal, son of Zirak.
Popalzai or Popalzay, also known as Popal, are Durrani Pashtuns of Afghanistan. Small number of Popalzais also live in Pakistan, particularly in the city of Quetta Abdul Ghafoor Khan Durrani and in Karachi.
The Zirak is a tribal confederation of Durrani Pashtuns, found in Afghanistan, Pakistan, and Zirakpur, India