He therefore after some years determined to renew the war.

It was in vain that the chief Mobed opposed himself to this intention; it was in vain that his other counsellors sought to dissuade him, that his general, Bahram, declared against the infraction of the treaty, and that the soldiers showed themselves reluctant to fight.
Perozes had resolved, and was not to be turned from his resolution.

He collected from all parts of the empire a veteran force, amounting, it is said, 50 to 100,000 men, and 500 elephants, placed the direction of affairs at the court in the hands of Balas (Palash), his son or brother, and then marched upon the north-eastern frontier, with the determination to attack and defeat the Ephthalites or perish in the attempt.

According to some Oriental writers he endeavored to escape the charge of having falsified his engagements by a curious subterfuge.

The exact terms of his oath to Khush-newaz, the Ephthalite king, had been that he would never march his forces past a certain pillar which that monarch had erected to mark the boundary line between the Persian and Ephthalite dominions.