Oral Tradition among Pashtuns:
Some anthropologists lend credence to the mythical oral traditions of the Pashtun tribes themselves.
1-according to the Encyclopaedia of Islam, the theory of Pashtun descent from Israelites is traced to Maghzan-e-Afghani who compiled a history for Khan-e-Jehan Lodhi in the reign of Mughal Emperor Jehangir in the 17th century.
2-Another book that corresponds with Pashtun historical records, Taaqati-Nasiri, states that in the 7th century BC a people called the Bani Israel settled in Ghor, southeast of Herat, Afghanistan, and then migrated south and east.
These book references to Bani Israel agree with the commonly held view by Pashtuns that when the twelve tribes of Israel were dispersed, the tribe of Joseph, among other Hebrew tribes, settled in the region. This oral tradition is widespread among the Pashtuns.
for instance if we look at the tribal name 'Yusef Zai' in Pashto, it translates to 'sons of Joseph'. A similar story is told by Iranian historian Ferishta.
It seems hardly coincidental that such a large number of tribes, castes, cities, etc. would have names equivalent to
Biblical ones unless there were some kind of connection between the people of Afghanistan and Kashmir and the Ten Lost Tribes of Israel.
Attempt of finding Pashtun origin:
Pashtun tribes have underwent some genetical analysis of DNA, but they have refused to do more. The first analysis said that they are more Arian/Persian in comparison to other roots. dont forget this part after watching the video.