Battle of Muzayyah When Khalid ibn Walid left from Ain - ul - Tamr to Daumat ul jandal for the help of Ayadh , the Persian court believed that Khalid had returned to Arabia with a large part of his army . The Persians decided to throw the Muslims back into the desert and regain the territories and the prestige which the Persian Empire had lost . The Persians had resolved not to fight Khalid again , but they were quite prepared to fight the Muslims without Khalid ibn al - Walid . Background . By now , Bahman had organised a new army , made up partly of the survivors of the Battle of Ullais , partly of veterans drawn from garrisons in other parts of the Empire , and partly of fresh recruits . This army was now ready for battle . With its numerous raw recruits , however , it was not of the same quality as the armies which had fought Muslims south of the Euphrates . Bahman decided not to commit this army to battle until its strength had been augmented by the large forces of Christian Arabs who remained loyal to the Empire . He therefore initiated parleys with the Arabs . The Christian Arabs responded willingly and eagerly to the overtures of the Persian court . Apart from the defeat at Ain - ul - Tamr , the incensed Arabs of this area also sought revenge for the killing of their great chief , Aqqa . They were anxious , too , to regain the lands which they had lost to the Muslims , and to free the comrades who had been captured by the invaders . A large number of clans began to prepare for war . Bahman divided the Persian forces into two field armies and sent them off from Ctesiphon . One , under Ruzbeh , moved to Husaid , and the other , under Zarmahr , moved to Khanafis . For the moment these two armies were located in separate areas for ease of movement and administration , but they were not to proceed beyond these locations until the Christian Arabs were ready for battle . Bahman planned to concentrate the entire imperial army to either await a Muslim attack or march south to fight the Muslims at Hira . But the Christian Arabs were not yet ready . They were forming into two groups : the first , under a chief named Huzail bin Imran , was concentrating at Muzayyah ; the second , under the chief Rabi ' a bin Bujair , was gathering at two places close to each other - Saniyy and Zumail . These two groups , when ready , would join the Persians and form one large , powerful army . This was the situation that greeted Khalid on his arrival at Hira from Daumat - ul - Jnadal in the fourth week of September 633 . The situation could assume dangerous proportions , but only if the four imperial forces succeeded in uniting and took offensive action against Hira . Khalid decided to fight and destroy each imperial force separately . With this strategy in mind , he divided the Muslim garrison of Hira into two corps , one of which he placed under Qaqa and the other under Abu Laila . Khalid sent them both to Ain - ul - Tamr , where he would join them a little later , after the troops who had fought at Daumat - ul - Jandal had been rested . A few days later the entire Muslim army was concentrated at Ain - ut - Tamr , except for a small garrison left under Ayadh bin Ghanam to look after Hira . The army was now organised in three corps of about 5 , 000 men each , one of which was kept in reserve . Khalid sent Qaqa to Husaid and Abu Laila to Khanafis with orders to destroy the Persian armies at those places . It was Khalid ' s intention to fight both Persian armies speedily as well as simultaneously , so that neither could get away while the other was being slashed to pieces . But this was not to be ; for the march to Khanafis was longer than to Husaid , and Abu Laila failed to move his forces with sufficient speed to make up for this difference . Meanwhile Khalid remained with his reserve corps at Ain - ut - Tamr to guard against any offensive movement from Saniyy and Zumail towards Hira . Qaqa defeated the Persian army at Husaid , and the remaining army retreated to Khanafis . Thus the commander of the army at Khanafis heard about the Muslim ' s victory at Husaid ; he withdraw his forces to Muzayyah and joined the Christian Arabs . Manoeuvre of Khalid . The remaining objectives were Muzayyah , Saniyy and Zumial . Khalid ibn al - Walid selected Muzayyah ; the others were smaller objectives which could be dealt with later without difficulty . By now the exact location of the imperial camp at Muzayyah had been established by Khalid ' s agents . To deal with this objective he designed a manoeuvre which , seldom practised in history , is one of the most difficult to control and co - ordinate - a simultaneous converging attack from three directions made " at night . " Attack . Khalid ibn al - Walid issued orders for the move . The three corps would march from their respective locations at Husaid , Khanafis and Ain - ut - Tamr along separate routes he had specified and meet on a given night and at a given hour at a place a few miles short of Muzayyah . This move was carried out as planned , and the three corps concentrated at the appointed place . He laid down the time of the attack and the three separate directions from which the three corps would fall upon the unsuspecting enemy . The imperial army knew of the attack only when three roaring masses of Muslim warriors hurled themselves at the camp . In the confusion of the night the imperial army never found its feet . Terror became the mood of the camp as soldiers fleeing from one Muslim corps ran into another . Thousands were slaughtered . The Muslims tried to finish this army , but large numbers of Persians and Arabs nevertheless managed to get away , helped by the very darkness that had cloaked the surprise attack . Aftermath . After the battle of Muzayyah , the surviving Christian Arabs and Persian soldiers joined the Arab army at Saniyya . They were destroyed later in the battle of Saniyya and the battle of Zumail .