The following story will illustrate the manner of this change. A great king of Persia, named Jamsheyd, had a certain wrestler named Rustam. He was the greatest of all wrestlers in the kingdom, and he became so proud of his strength and power and bravery that the king thought he would humble him in some way. But he could not find anyone who could be trained so as to be capable of matching Rustam: he was the only one of his kind in the whole land. Then it happened that Rustam went to Arabia, and during his absence a son was born to him, who was given the name of Kushtam. The child's mother died soon after, and this was the opportunity the king sought. He took the child into his palace, and no one knew he was Rustam's son. In the course of time the youth became a great fighter, so strong and powerful that no one in the land could match him. And then, after many years, Rustam returned. Jamsheyd did not tell the youth that Rustam was his father; he only said that a powerful wrestler had come from Arabia, and that he must fight him.