When word reached the Iranian nobles and the venerable Goudarz that Tus and Fariborz had failed to pierce the enchanted ramparts of Bahman Fortress, the young king Kai Khosrow personally took command. He assembled an imposing force, riding upon an elephant-borne golden throne inlaid with chrysolite, flanked by the violet banner and adorned with ruby armlets and royal regalia. Drawing near the dark stronghold, Khosrow donned his armor and commanded a royal scribe to draft a missive in Pahlavi script, scented with ambergris.
In this sacred scroll, Khosrow proclaimed his devotion to Yazdan, the eternal Creator of Saturn, the Sun, and Divine Glory. He declared that if the fortress belonged to Ahriman and his dark sorcerers, it would be shattered to dust by the almighty power of God and his own royal mace. Binding the scroll to the head of a spear, he commanded Gev to ride swiftly to the fortress wall, plant the spear, invoke the Holy Name, and return without delay.
As Gev set the spear against the wall and invoked the Almighty, the letter vanished into thin air. A thunderous roar shattered the silence of the wilderness, and by divine decree, the enchanted ramparts split wide open. Darkness blacker than a Moor's face veiled the sky, turning the air into the gaping maw of a ferocious lion. Khosrow commanded his archers to loose a hail of arrows; deadly shafts rained down upon the fortress, obliterating the fleeing demons.
Suddenly, a celestial radiance burst through the shadows, dispelling all dark sorcery. The sky cleared to the brightness of a full moon, and the gates of the citadel stood exposed. Entering the stronghold with Goudarz, Khosrow discovered a magnificent hidden city of lush gardens, grand palaces, and sprawling squares. At the exact spot where the divine light had first blazed, Khosrow ordered a soaring dome to be built, founding the sacred Fire Temple of Azar Gushasp. For a full year, mobads and astronomers gathered around the holy flame as the city flourished.
When news of this miraculous victory reached Iran, immense rejoicing swept the land. Fariborz and Tus came forward to greet the young monarch. Tus surrendered the Kianian Standard, the royal kettle-drums, and golden slippers, humbly asking for forgiveness. Khosrow, possessing true divine nobility, welcomed them with smiles and reappointed Tus as the grand marshal of the realm.
Khosrow then set out for Pars, where the aged King Kay Kavus eagerly awaited his blessed grandson. Embracing Khosrow with tears of joy—seeing in his face the living image of his slain son Siyavash—Kavus placed the Kianian crown upon Khosrow's head and surrendered the imperial throne to him. Jewels and emeralds were scattered in tribute. Ferdowsi concludes with a timeless reflection on the transience of mortal power, urging humanity to live righteously, seek joy, and rule with justice.