"The hymns specify by name individual Aryan kings and their Dasa or Dasyu foes , with genealogies. Thus Indra helped Divodasa Atithigva, the king of the Trtsus, in , vanquishing Dasa Sambara, who is mentioned about twenty times in the Rgveda. Divodasa's descendant was king Sudas, most famous for the battle of ten kings (RS 7,18 & 33 & 83). Sudas fought against Dasas as well as Aryans: RS 7,83,1 " ... Slay both the Dasa enemies and the Aryan: protect Sudas with your aid, a Indra and Varuna." Similarly Indra aided Rjisvan, son of Vidathin, to conquer Dasa Pipru, whose name occurs eleven times . .Dabhiti pressed Soma for Indra and was aided by the god, who sent to sleep 30,000 Dasas (RS 4,30,2) and bound a thousand Dasyus with cords (~S 2,13,9), so that the Dasas Cumuri and Dhuni were overcome and their castles destroyed (~S 6,18,8). Other probably historical enemies of the Aryans who are called Dasa and mentioned by name are Varcin, whose 100,000 warriors were slain by Indra; Drbhika and Rudhikra (E-S 2,14,3 & 5); Anarsani and Srbinda (~S 8,32,3); Arsasana (~S 1,130,8; 2,20,6); and Ilibisa (E-S 1,33,12). What an important role the struggles with their enemies played in the lives of the Aryans at this period is illustrated also by the names of some of their own kings: the son of Purukutsa was called Trasadasyu "one who makes the Dasyus tremble""