It was then that a monstrous deed was done by the Thracian king of the Bisaltae and the Crestonian country. He had refused to be of his own free will Xerxes' slave, and fled to the mountains called Rhodope. He forbade his sons to go with the army to Hellas, but they took no account of that; they had always wanted to see the war, and they followed the Persians' march. For this reason, when all the six of them returned back scatheless, their father tore out their eyes.