[Mandhātā pushed past] "the prostrate Paurava realm, and pushing beyond them westwards, he had a long contest with and conquered the Druhyu king who … - Frederick Eden Pargiter

The next Druhyu king Gandhāra retired to the northwest and gave his name to the Gandhāra country.

One branch, headed by Uśīnara established several kingdoms on the eastern border of the Punjab [...] his famous son Śivi originated the Śivis [footnote: called Śivas in Rigveda VII.18.7] in Śivapura, and extending his conquests westwards [...] occupying the whole of the Punjab except the northwestern corner.

Indian tradition distinctly asserts that there was an Aila outflow of the Druhyus through the northwest into the countries beyond where they founded various kingdoms.

[tradition] makes the Aila power begin at Allahabad and yet distinctly suggests that they came from outside India.