[The fact that there are Indo-European languages outside India: Pargiter clearly attributes the presence of these languages to the] Aila outflow of t… - Frederick Eden Pargiter

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.

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

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.

"If the Aryans had entered India from the north-west, and had advanced eastward through the Punjab only as far as the Saraswati or Jumna when the Rigvedic hymns were composed, it is very surprising that the hymn arranges the rivers, not according to their progress, but reversaly from the Ganges which they had hardly reached. " Imam me gange yamune sarasvati sutudri stomam sacata parusnaya asiknya marudvrdhe vitastayarjikiye srnuhya susomaya " (x 75.05) O Ganga, Yamuna, Sarasvati, Sutudri (Sutlej), Parushini (Ravi), hear my praise! Listen to my call, Asikni (Chenab), Marudvridha (Maruvardhvan), Vitasta (Jhelum) with Arjikiya, Sushoma (Sohan).