The Dilazak originally dwelled in eastern Afghanistan in the Sulaiman Range. They were the first of the Pashtun tribes from the region to migrate north-eastwards. They descended to the valley of Peshawar through Khyber Pass during the time of Samanid Dynasty, between 750 and 850 CE. The Dilazak expelled or subdued other tribes of the area. By the time of Mehmood Ghaznavi (around 1000 CE), the Dilazak had reached the Indus River (Then called Abaseen or Neelaab). They participated in the campaigns of Mehmood Ghaznavi in large numbers under their leader Malik Yahya Khan. In the 500 years that followed, they extended up to Hassan Abdal and towards the North up to Abbottabad. According to Aain-i-Akbari (Written around 1590 CE), the Dilazak were the only Pashtun tribe that possessed lands in Hazara Qaarlugh.