Dear Friends,
It is a globally known fact that the Persians called the " Scythians ", " Sakā " ( Sakai ) [ who were later known as " Śāka " in India ]; and almost all of the Scythologists and Iranologists throughout the globe agree with this established research-work.
One reference, for the scholars in making : Scythians in the Ancient World ( http://ancienthistory.about.com/od/a...9Scythians.htm ) by N. S. Gill (N. S. Gill has a B. A. in Latin and an M. A. in linguistics at the University of Minnesota. She has TA'd classes in the Age of Pericles, technical terms, Classical culture and mythology.).
And, how is it possible that the Persians were successfully able to spell " Sakâ ", but failed to spell " Sindhu " ?!
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Sincerely !!