Wikipedia
Pashtunwali or Pakhtunwali is a non-written ethical code and traditional lifestyle which the indigenous Pashtun people follow. It is a system of law and governance that began during prehistoric times and is preserved and still in use today, mostly in the rural tribal areas. Its meaning may also be interpreted as "the way of the Pashtuns" or "the code of life". Pashtunwali dates back to ancient pre-Islamic times and is widely practiced among Pashtuns, especially among the non- urbanized Pashtuns in the countryside. In addition to being practiced by members of the Pashtun diaspora, it has been adopted by some non-Pashtun Afghans and Pakistanis that live in the Pashtun regions or close to the Pashtuns, who have gradually become Pashtunized over time. During the Pashtun-dominated Taliban regime, Pashtunwali was practiced throughout the Islamic Emirate of Afghanistan in conjunction with the Taliban's interpretation of Deobandi Islam.