Rubuta ci gaba don wannan sakin layi - Bayan da mafi yawan yankunan karkara na Siriya suka ci nasara da Rashidun Caliphate a lokacin mulkin Khalifa Umar, an ci Damascus kanta
ta hanyar Musulmi-Arab janar Khalid ibn al-Walid a watan Agusta - Satumba 634 AD. Sojojinsa a baya sun yi ƙoƙarin kama birnin a watan Afrilu 634, amma ba tare da nasara ba. Da yake Damascus yanzu tana hannun Musulmai Larabawa, Byzantines, sun damu da asarar birni mafi daraja a Gabas ta Tsakiya, sun yanke shawarar sake karɓar iko da shi. A karkashin Sarkin sarakuna Heraclius, Byzantines sun yi amfani da sojojin da suka fi na Rashidun a cikin maza. Sun ci gaba zuwa kudancin Siriya a lokacin bazara na 636 kuma sakamakon haka sojojin Khalid ibn al-Walid suka janye daga Damascus don shirya don sabunta rikici. A watan Agusta, bangarorin biyu sun hadu a gefen Kogin Yarmouk inda suka yi babban yaƙi wanda ya ƙare da nasara mai nasara ta musulmi, yana ƙarfafa mulkin musulmi a Siriya da Falasdinu.