Now Kai Khosrau, when he had listened, knew that this was not a wild ass but the Deev Akwan, who had taken this disguise upon him. So he cast about whom he should send forth to meet him, and he knew there was none other but Rustem, the son of Zal, to whom he could turn in this strait. So he sent a messenger swift as a cloud before a storm to summon him forth yet again. And Rustem obeyed the voice of his Shah, and he set forth in search of the Deev, and he was mounted upon Rakush his steed. And in his hand was a mighty mace, and round his wrist was rolled a cord of length. And he went in search of the wild ass, and when he had found him he threw his cord about him. But the ass vanished under his hands. Then Rustem knew that it was a Deev, and that he fought against the arts of magic. Yet was he not dismayed.
And after a while the ass came forth again, and Rustem threw his cord once more about him. And yet again the Deev vanished under his hand.
And thus did the Deev three days and three nights without ceasing, so that weariness came upon Rustem and he was heavy with slumber.
So he sought out a spot of safety and he laid him down to rest, and he bade Rakush browse beside him.
Now when the Deev saw that Rustem was sleeping, he drew nigh and loosened the earth whereon he lay, and lifted it and placed it upon his head, that he might cast it away and destroy Rustem. But as he carried him Rustem awoke, and when he saw what was come to pass he feared that his hour was come. And the Deev, when he beheld that Rustem was awakened, spake, and said unto him-"O hero, which death dost thou covet? Shall I fling thee down upon the mountain or cast thee into the sea?"
Now Rustem knew that the Deev questioned him in wile, and he bethought him that he would of a surety do that which Rustem desired not, so he said-"I have heard it said that it is not given to those that perish in the waters to look upon the face of the Serosch or to find rest in the life that is beyond."
Then the Deev said, "I desire that thou know not repose."
And he flung him into the sea at a spot where hungry crocodiles would devour him.
Now Rustem, when he felt the water beneath him, forthwith drew out his sword and combated the crocodiles with his right hand, and with his left he swam towards the shore. And long did he struggle and sore, but when the night was fallen he put his foot upon the dry land. Then, when he had given thanks unto God and rested him, he returned unto the spot where he had found the Deev. And he sought after Rakush his steed, and his eye beheld him not. Then fear filled his spirit, and he roamed around to seek him. And he found him at last among the horses of Afrasiyab, that grazed in a spot hard by, for the keepers had ensnared him. But when Rakush heard the voice of Rustem he neighed aloud, and brake from the keepers and ran towards his master. And Rustem put the saddle upon him and mounted him. Then he slew the keepers and took their herds unto himself.
Now while he was so doing Afrasiyab came forth from his hiding-place, for his heart yearned to look upon his horses. And when he beheld Rustem in their midst he was dismayed, and knew not whither he should turn, for he deemed that the Pehliva had discovered his hiding-place and was come forth against him. So he offered battle unto him with the men that were with him. And Rustem accepted the challenge, although he was alone; and he fought with might and overcame the men, and slew sixty of them with his sword and forty with his mace. And Afrasiyab fled once more from before him.
Now when it was done the Deev came forth again, for he thought he could quell Rustem now that he was weary. But Rustem sprang on him and crushed him, and he was slain at his hands. Then the Pehliva returned unto Kai Khosrau. And when the Shah had learned of all his deeds, and beheld the booty that he had brought back, his mouth could not cease from praising the prowess of Rustem, and he would have kept his Pehliva beside him for ever. But Rustem said-"Suffer thy servant to go forth. For I would make ready an host, since it behoveth us not to cease from the vengeance that is due unto Saiawush, for his murderers yet cumber the ground."
Wherefore Rustem departed yet again from out the courts of the Shah.
