Battle of Saniyy When Khalid ibn Walid gone 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 , Persians decided to throw the Muslims back into the desert and regain the territories and the prestige which the 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 . Khalid ibn al - Walid first defeated them at the battle of Muzayyah and then advanced towards Saniyy . Background . By now Bahman had organised a new army , made up partly of the survivors of 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 , the remaining army retreated to Khanafis , where when the commander of the army at Khanafis heard about the Muslim ' s victory at husaid withdraw his forces to Muzayyah and joined the Christian Arabs , where Khalid ibn Walid defeated them in the Battle of Muzayyah . The manoeuvre of Khalid . The remaining objectives were Muzayyah and the Saniyy and Zumial , Khalid ibn al - Walid selected Muzayyah . The other was a smaller objective and could be dealt with later without difficulty as by now the exact location of the imperial camps at Muzayyah , Saniyy and Zumial had been established by Khalid ' s agents , and 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 . " The battle . Khalid decided to repeat the manoeuvre of Muzayyah . His army would operate in three corps as before . From Muzayyah the corps would march on separate axes and converge for the attack on Saniyy on a predetermined night and time . Khalid advanced on the direct route from Muzayyah while the other corps moved wide on his flanks . On the appointed night and at the appointed time – in the second week of November 633 ( first week of Ramazan , 12 Hijri ) – the three corps fell upon the Arab camp at Saniyy . This time even fewer Arabs survived the slaughter . The women and children and many youths , however , were spared , and taken captive . The Arab commander , Rabi ' a bin Bujair was killed . Aftermath . After the Battle of Saniyy , Khalid ibn Walid attacked the Arab forces at Zumail and destroyed them too after which the Persian might in Iraq finally ended .