Explanation:

The river Jhelum is called Vitasta in the Rigveda and Hydaspes by the ancient Greeks. The Vitasta is mentioned as one of the major rivers by the holy scriptures — the Rigveda. It has been speculated that the Vitasta must have been one of the seven rivers (sapta-sindhu) mentioned so many times in the Rigveda. The name survives in the Kashmiri name for this river as Vyeth. According to the major religious work Srimad Bhagavatam, the Vitasta is one of the many transcendental rivers flowing through land of Bharata, or ancient India.

Alexander the Great and his army crossed the Jhelum in BC 326 at the Battle of the Hydaspes River where he defeated the Indian king, Porus.