 He set up his position somewhere in Khorasan and rejected the terms of peace offered by Khushnavaz.However, when a showdown with the Sasanians seemed imminent, Khushnavaz sent a small body of troops in advance in order to trick Peroz into an ambuscade at Herat.The plan was successful, and the Sasanians were defeated with great slaughter, Peroz being one of the victims.