The cause of the Ten-Kings battle was that the Ten tried to divert the river Parushni. This is a stretch of the modern Ravi which, however, changed its course several times. Diversion of the waters of the Indus system is still a cause for angry recriminations between India and Pakistan. The 'greasy-voiced' Purus, though enemies of en:Sudas, were not only en:Aryans but closely related to the Bharatas. Later tradition even makes the Bharatas a branch of the Purus. The same clan priests in the Rigveda impartially call down curses and blessings upon the Purus in diverse hymns, which shows that the differences between them and the Bharatas were not permanent. The quarrel was of another sort than that between Aryan and non-Aryan. The Purus remained in the Harappa region and expanded their rule over the Panjab in later times. It was they who put up the strongest fight against Alexander in 327 B.C. The modern Panjabi surname Puri may possibly originate with the Puru tribe., Ancient India: A History of its Culture and Civilisation, By Kosambi, Damodar Dharmanand, pp 81-83
According to Arrian, Diodorus, and Strabo, en:Megasthenes described an Indian tribe called Sourasenoi, who especially worshipped Herakles in their land, and this land had two cities, Methora and Kleisobora, and a navigable river, the Jobares. As was common in the ancient period, the Greeks sometimes described foreign gods in terms of their own divinities, and there is a little doubt that the Sourasenoi refers to the Shurasenas, a branch of the en:Yadu dynasty to which كريشنا belonged; en:Herakles to Krishna, or Hari-Krishna: Mehtora to Mathura, where Krishna was born; Kleisobora to Krishnapura, meaning "the city of Krishna"; and the Jobares to the Yamuna, the famous river in the Krishna story. كوينتوس كورتيوس روفوس also mentions that when Alexander the Great confronted Porus, Porus's soldiers were carrying an image of en:Herakles in their vanguard.Krishna: a sourcebook, pp 5, Edwin Francis Bryant, Oxford University Press US, 2007
"It seems, therefore, most reasonable to conclude that the name is simply the seat of Purrus or Porus, the name of a King or family of kings...There are no authentic records of tribes seated about Peshawar before the time of Mahmud, beyond established fact of their being of Indian origin; it not an improbable conjecture that they descended from the race of Yadu who were either expelled or voluntarily emigrated from Gujrat, 1100 years before Christ, and who afterwards found Kandhar and the hills of Cabul (Kabul) from whom, indeed, some would derive the en:Jaduns now residing in the hills of north of يوسفزي..."Gazetteer of the Dera Ghazi Khan District, pp52, Publisher: Lahore, "Civil and Military Gazette" Press, 1898.
