Indus system that corresponds to Iranian Harayu (Avestan acc. Harōiium, Old Persian Haraiva, modern Harē), the Herat river. It is invoked together with Sindhu and Sarasvati (two of the most prominent Rigvedic rivers) in the late hymn RV 10.64. Later on, according to Ramayana 1.5.6, the Sarayu flowed beside the ancient