Battle of Marj al-Saffar (634)

At Damascus, Thomas, son-in-law of Byzantine Emperor Heraclius, was in charge. Receiving the intelligence of Khalid's march towards Damascus he prepared the defences of Damascus. He wrote to Emperor Heraclius for reinforcement, who was at Emesa that time. Moreover, Thomas, in order to get more time to prepare for a siege, sent the armies to delay, or if possible, halt Khalid's march to Damascus. One such army was defeated at the Battle of Yaqusa in mid-August 634 near Lake Tiberias 150 km from Damascus, an other army that halted the Muslim advance to Damascus was defeated in Battle of Maraj as Saffer on 19 August 634

It is said that Umm Hakim, a Muslim heroine was involved in this battle