Thursday, October 1, 2026

The Conquest of Iraq: Khalid bin Walid’s Campaigns Against the Persian Empire

Policy of the Muslims

Abu Bakr Siddiq (رَضِيَ ٱللَّٰهُ عَنْهُ) was well aware of the designs of the Persians when he approved the departure of Usamah's detachment. At a time when Al-Madinah itself was under great pressure, he adopted a policy of buying time before opening a war front against the major powers until the threat of apostasy was put down. He, therefore, sent a small column to Iraq under Muthanna bin Harithah (رَضِيَ ٱللَّٰهُ عَنْهُ) not to start a pitched battle but to function as a raiding party meant just to terrorize the men in power so that the Persians dared not attack Arabia. He had in mind the same purpose when he had dispatched Usamah (رَضِيَ ٱللَّٰهُ عَنْهُ) against the Romans.

When the situation in Najd and Yamamah came under control, Siddiq (رَضِيَ ٱللَّٰهُ عَنْهُ) addressed a letter to Iyad bin Ghanam (رَضِيَ ٱللَّٰهُ عَنْهُ) in Najd to take with him those Muslims who were still beyond the reach of apostasy, and launch an attack on the upper parts of Iraq. Following this, he wrote another letter to Khalid bin Walid (رَضِيَ ٱللَّٰهُ عَنْهُ) in Yamamah to turn towards the lower parts of Iraq. Both the Muslim commanders met at Uballah according to the instructions of the Caliph.

The Battle of Dhat-us-Salasil

When Khalid bin Walid (رَضِيَ ٱللَّٰهُ عَنْهُ) took stock of his entire army at Uballah, he found that he had not more than eighteen thousand fighters. His fresh target was Hafir, the Persian province of Iraq, and Hurmuz was its governor who was well known throughout Arabia for his valor and military skill. He was a terror for India also for he so often led assaults on the Indian coast with his war fleet.

Khalid bin Walid (رَضِيَ ٱللَّٰهُ عَنْهُ) first addressed a letter inviting him to Islam. But Hurmuz responded with leading a large and strong army against the Muslim commander. With his instinctive military acumen, Khalid (رَضِيَ ٱللَّٰهُ عَنْهُ) divided his army into three parts. He then handed over the command of one part to Adi bin Hatim (رَضِيَ ٱللَّٰهُ عَنْهُ), another part he entrusted to Qa'qa' bin Amr (رَضِيَ ٱللَّٰهُ عَنْهُ) and the third one he kept with himself. All the three wings marched ahead to meet at Hafir with the difference of a one-day journey and pitched their camps facing the Persian army.

First of all, Khalid bin Walid (رَضِيَ ٱللَّٰهُ عَنْهُ) himself came out and threw a challenge to Hurmuz for a duel. He responded to the call and stepped forward. Both the commanders got down from their horses. Khalid (رَضِيَ ٱللَّٰهُ عَنْهُ) was the first to strike. Hurmuz made a hasty retreat and parried the stroke, then he struck Khalid with agility. Khalid (رَضِيَ ٱللَّٰهُ عَنْهُ) got up quickly, rushed forward and snatched away his wrist by twisting his wrist. Now Hurmuz clasped his body which led to wrestling between the two. Khalid (رَضِيَ ٱللَّٰهُ عَنْهُ) lifted him high by his waist with lightening speed and then threw him on the ground so forcefully that he failed to move. Khalid (رَضِيَ ٱللَّٰهُ عَنْهُ) then got on his chest, cut his head off and threw it away.

When a squad of the Persian army witnessed its commander being overpowered, it moved ahead to help him but Qa'qa' bin Amr (رَضِيَ ٱللَّٰهُ عَنْهُ) stood like a rock. Following this, troops from both sides fell on one another and a fierce battle broke out in no time. But the Persians could not withstand the heavy Muslim onslaught and fled in panic and terror.

Hurmuz was such an exalted governor and commander among his people that he wore a crown on his head. This costly crown came to Khalid (رَضِيَ ٱللَّٰهُ عَنْهُ) and it was valued at one hundred thousand dinars. A section of the Persian army had chained themselves with the determination of winning or dying. But they had to break their chains and flee leaving thousands of men dead and injured. This battle is known as Dhat-us-Salasil because of these chains.

Khalid (رَضِيَ ٱللَّٰهُ عَنْهُ) asked Muthanna bin Harithah (رَضِيَ ٱللَّٰهُ عَنْهُ) to give chase to the fleeing Persian fighters. The Muslim forces laid siege round the citadel of Hisn-ul-Marah and conquered it putting the ruler to death. His wife accepted Islam and desired to be married to Muthanna (رَضِيَ ٱللَّٰهُ عَنْهُ).

The Battle of Qarin

In response to Hurmuz's call for help, a large troop of reinforcements was immediately sent by the Persian ruler. The frustrating news of Hurmuz's death and his fleeing soldiers greeted it on the way. The fresh fighters of the reinforcements encouraged them to have a fresh encounter with the Muslim troops. They encamped at a canal and the Muslim fighters marched on to meet them. During the ferocious fight, all the three generals, Qarin, Qibad and Anushjan, were killed leaving behind thirty thousand fighters dead and a large number of the run-away soldiers drowned in the canal.

As a follow-up action after the conquest of the province, Khalid (رَضِيَ ٱللَّٰهُ عَنْهُ) made the inhabitants pay the Jizyah (tax) and appointed a Muslim governor to run the administration according to Islamic law.

The Battle of Walajah

After Qarin and the other generals were killed, the Persian ruler sent a well-known horseman Andarzagar to lead the Persian army which set out from Madain and arrived at Walajah. At the back of Walajah was dispatched another general, Bahman Jadwaih from Madain, at the head of another very strong army.

However, Khalid bin Walid (رَضِيَ ٱللَّٰهُ عَنْهُ) marched with his troops and launched an attack on the Persian army which was routed after a fierce battle. Their general also died of thirst right on the battlefield. However, Bahman Jadwaih reached Ullais and the Persian fugitives joined his army. Many Christian Arabs also extended their unconditional support to them.

The Battle of Ullais

Informed of the presence of a large army at Ullais, Khalid bin Walid (رَضِيَ ٱللَّٰهُ عَنْهُ) himself marched ahead and launched his attack. Khalid (رَضِيَ ٱللَّٰهُ عَنْهُ) first called a man for a duel. Malik bin Qais was sent from the Persian camp and Khalid (رَضِيَ ٱللَّٰهُ عَنْهُ) killed him. Now an all-out battle started, which resulted in seventy thousand enemy fighters being killed at the hands of the Muslims.

Conquest of Hirah

From Ullais, Khalid bin Walid (رَضِيَ ٱللَّٰهُ عَنْهُ) marched to Hirah and besieged it. When the siege drew long and the citizens were tired of it, the chief of Hirah, Amr bin Abdul-Masih along with others appeared before the Muslim commander. The Persian general and army had already fled in panic with the news of the demise of Chosroes Ardsher. Abdul-Masih won peace in return for two hundred thousand dirhams as tribute. After the conquest, Khalid bin Walid (رَضِيَ ٱللَّٰهُ عَنْهُ) sent Dirar bin Al-Azwar, Dirar bin Al-Khattab, Qa'qa' bin Amr, Muthanna bin Harithah and Uyainah bin Ash-Shamas (رَضِيَ ٱللَّٰهُ عَنْهُ) at the head of small columns to make the surrounding tribes and settlers accept either the Jizyah (tax) or Islam. Thus the entire territory up to the Tigris fell to Khalid bin Walid (رَضِيَ ٱللَّٰهُ عَنْهُ).

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