The sound of weapons and the voices of heroes deafened the ears and stirred the souls. The gleam of spears and swords amidst the dust was like the light of stars in the dark night. The war continued for three consecutive days in this place. Water had run out from the Persian army, and thirst intensified to the point where the commanders and the noble horses no longer had the strength or ability to fight on the battlefield. Rustam's lips were parched and his tongue cracked, so much so that men and beasts began to eat mud to quench their thirst. Despite this, the heroes called out from both sides, "Come to fight!" Rustam and Sa'd emerged from the heart of their armies, separated from their soldiers, and dueled. Rustam shouted like thunder and struck Sa'd's horse on the head with his sword. The horse fell, and Sa'd fell to the ground. At that moment, Rustam dismounted and advanced towards him to strike his neck. But Sa'd, seizing the opportunity, attacked Rustam and struck him on the head with his sword, wounding him. Blood flowed down his face, covering his eyes. Then he followed up with a second blow, and Rustam fell to the ground. He continued with several blows to his body until he cut him to pieces. The army, witnessing all this, did not search for their leader. They found his corpse covered in dust. The spoils of war were all sent to the Sultanate. The Arab armies pursued the defeated, marching day and night. Many renowned commanders, men, and animals were killed in this war. They could not stand on their horses due to extreme thirst. During this war, Yazdegerd, the last king of the Sasanian dynasty, was in Baghdad. Some of the soldiers returned to him, and some returned to the Sultanate in Iran. The war ended with the Arabs taking the lands of the Persians. Sa'd entered the palace of Khosrow and performed the prayer of victory. This was the first Friday prayer held in Iraq, in Safar of the Hijra year. When the Muslims saw the palace of Khosrow, they were amazed and said, "This is the white palace of Khosrow! This is what Allah and His Messenger promised us." Sa'd remained on the river Shira until Safar. Then they crossed the Tigris, and the Persians fled from Madain towards Halwan, a city in Iraq. Yazdegerd had sent his family to Halwan and left with them, taking whatever possessions they could carry. The Muslims entered Madain, killed everyone they found, and surrounded the white palace. Sa'd occupied it and took possession of the palace of Khosrow. They gathered so many riches, weapons, clothes, and jewels that they were beyond counting. Some Muslims found a camel that had fallen into the water and discovered Khosrow's jewelry, including the crown, belt, and armor, all encrusted with jewels. They also found other items too numerous to describe. Khosrow had a carpet sixty cubits long, in the form of a garden, depicted with jewels on golden threads. Sa'd requested a portion of it for his companions and sent it to the Sultan.