Abu Musa was in command of the Muslim army traversing the lands of the Sasanian Empire. At Isfahan, the people came to him and offered to pay the jizyah (in return for military protection) to make peace and avoid fighting.

However, they were not sincere in their offer and merely wanted an opportunity to..

mount a treacherous attack on the Muslims. Abu Musa however saw through their real intentions and he remained on the alert. Thus when the Isfahanis launched their attack, the Muslim leader was not caught off-guard, He engaged them in battle and before midday of the following day, he had won a decisive victory.

In the major campaigns against the powerful Sasanian Empire Abu Musa’s role was outstanding. In the great Battle of Tustar itself, he distinguished himself as a military commander.

The Persian commander, Hormuzan, had withdrawn his numerous forces to the strongly fortified city of Tustar. The Caliph Umar did not underestimate the strength of the enemy and he mobilized powerful and numerous force to confront Hormuzan. Among the Muslim forces were dedicated veterans like Ammar ibn Yasir, al-Baraa ibn Malik and his brother Anas, Majra’a al-Bakri and Salamah ibn Rajaa. Umar appointed Abu Musa as commander of the army.

So well fortified was Tustar that it was impossible to take it by storm. Several attempts were made to breach the walls but these proved unsuccessful. There followed a long and difficult siege which became even more testing and agonizing for the Muslims when, as we saw in the story of al-Baraa ibn Malik, the Persians began throwing down iron chains from the walls of the fortress at the ends of which were fastened red-hot iron hooks. Muslims were caught by these hooks and were pulled up either dead or in the agony of death.

Abu Musa realized that the increasingly unbearable impasse could only be broken by a resort to stratagem. Fortunately, at this time a Persian defected to the Muslim side and Abu Musa induced him to return behind the walls of the fortified city and use whatever artful means he could to open the city’s gates from within. With the Persian he sent a special force of hand-picked men. They succeeded well in their task, opened the gates and made way for Abu Musa’s army. Within hours the Persians were subdued.