The arguments used to prove the advance of the Aryans from Afghanistan into the Punjab might simply be reversed. - Frederick Eden Pargiter

There was an outflow of people from India before the fifteenth century BC.

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.

[Mandhātā pushed past] "the prostrate Paurava realm, and pushing beyond them westwards, he had a long contest with and conquered the Druhyu king who appears to have been then on the confines of the Panjab, so that the next Druhyu king Gandhāra retired to the northwest and gave his name to the Gandhāra country" (PARGITER 1962:262).