Whilom the fancy seized upon the Shah of Iran that he would visit his empire, and look face to face upon his vassals, and exact their tribute. So he passed from Turan into China, and from Mikran into Berberistan. And wheresoever he passed men did homage before him, for the bull cannot wage battle with the lion. But it could not remain thus for ever, and already there sprang forth thorns in the garden of roses. For while the fortunes of the world thus prospered, a chieftain raised the standard of revolt in Egypt, and the people of the land turned them from the gates of submission unto Iran. And there was joined unto them the King of Hamaveran, who desired to throw off the yoke of Persia. But Kai Kaous, when the tidings thereof came unto him, got ready his army and marched against the rebels. And when he came before them, their army, that had seemed invincible, was routed, and the King of Hamaveran was foremost to lay down his arms and ask pardon of his Shah. And Kai Kaous granted his petition, and the King departed joyously from out his presence. Then one of those who stood about the Shah said unto him-"Is it known to thee, O Shah, that this King hideth behind his curtains a daughter of beauty? It would beseem my lord that he should take this moon unto himself for wife."
And Kai Kaous answered, "Thy counsel is good, and I will therefore send messengers unto her father, and demand of him that he give me his daughter as tribute, and to cement the peace that hath been made between us."
When the King of Hamaveran heard this message his heart was filled with gall, and his head was heavy with sorrow, and he murmured in his spirit that Kai Kaous, who owned the world, should desire to take from him his chiefest treasure. And he hid not his grief from the Shah in his answer, but he wrote also that he knew it behoved him to do the thing that Kai Kaous desired. Then in his distress he called before him Sudaveh his daughter, whom he loved, and he told her all his troubles, and bade her counsel him how he should act. For he said-"If I lose thee, the light of my life is gone out. Yet how may I stand against the Shah?"
And Sudaveh replied, "If there be no remedy, I counsel thee to rejoice at that which cannot be changed."
Now when her father heard these words he knew that she was not afflicted concerning that which was come about. So he sent for the envoy of Kai Kaous and assented unto his demands, and they concluded an alliance according to the forms of the land. Then when the King had poured gifts before the messenger, and feasted him with wine, he sent forth an escort to bear his daughter unto the tents of the Shah. And the young moon went forth in a litter, and she was robed in garbs of splendour, and when Kai Kaous beheld her loveliness he was struck dumb for very joy. Then he raised Sudaveh unto the throne beside him, and named her worthy to be his spouse. And they were glad in each other, and rejoiced; but all was not to be well thus quickly.
For the King of Hamaveran was sore in his heart that the light of his life was gone from him, and he cast about in his spirit how he should regain her unto himself. And when she had been gone but seven days, he sent forth a messenger unto Kai Kaous and entreated him that he would come and feast within his gates, so that all the land might rejoice in their alliance.
When Sudaveh heard this message her mind misgave her, and she feared evil. Wherefore she counselled the Shah that he should abstain from this feast. But Kai Kaous would not listen unto the fears of Sudaveh, he would not give ear unto her warning. Wherefore he went forth unto the city of the King of Hamaveran, and made merry with him many days.
And the King caused gifts to be rained down upon Kai Kaous, and he flattered him, and cozened his vanity, and he made much of his men, and he darkened their wits with fair words and sweet wine. Then when he had lulled their fears, and caused them to forget wherefore and why and all knowledge of misfortune, he fell upon them and bound them with strong chains, and overthrew their glories and their thrones.
And Kai Kaous did he send unto a fortress whose head touched the sky and whose foot was planted in the ocean. Then he sent forth a strong band into the camp of Iran, and veiled women went with them, and he charged them that they bring back Sudaveh unto his arms.
Now when Sudaveh saw the men and the women that went with them she guessed what was come about, and she cried aloud and tore her robes in anguish. And when they had brought her before her father she reproved him for his treachery, and she sware that none should part her from Kai Kaous, even though he were hidden in a tomb. Then the King was angered when he saw that her heart was taken from him and given to the Shah, and he bade that she be flung into the same prison as her lord. And Sudaveh was glad at his resolve, and she went into the dungeon with a light heart, and she seated herself beside the Shah, and served him and comforted him, and they bore the weight of captivity together.
After these things were come about, the Iranians, because that their Shah was held captive, returned unto Iran much discomfited. And when the news spread that the throne was empty many would have seized thereon.
And Afrasiyab, when he learned it, straightway forgot hunger and sleep, and marched a strong army across the border. And he laid waste the land of Iran, and men, women, and children fell into bondage at his hands, and the world was darkened unto the kingdom of light. Then some arose and went before the son of Zal to crave his help in this sore need, saying unto him-"Be thou our shield against misfortune, and deliver us from affliction, for the glory of the Kaianides is vanished, and the land which was a paradise is one no more."