Dasa, Dasyu and Arya
Dasyu is a term that could also be applied to Vedic kings, if their behaviour changed. In the battle of the Ten Kings (Dasarajna) in the Rig Veda the king Sudas calls his enemies "Dasyu" which included Vedic peoples like the Anus, Druhyus, Turvashas, and even Purus. (RV 7.6, 12-14, 18)
There is also a Dasa Balbutha Taruksa in RV 6.45.31 who is a patron of a seer and who is distinguished by his generosity (RV 8.46.32). There are several hymns in the Rigveda that refer to Dasa and Aryan enemies and to related (jami) and unrelated (ajami) enemies (e.g. 1.111.3, 4.4.5); still, in the battle of the ten kings, there are Dasas and Aryas on both sides of the battlefield and in some Rigvedic verses, the Aryas and Dasas stood united against their enemies.
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