Mezue nkebi ahịrịokwu a: Agba nke abụọ malitere mgbe Khalid ibn al-Walid na ndị agha ya rutere Siria n'afọ 634. N'okpuru iwu kachasi elu nke Khalid, ndị agha ndị Alakụba nọchibidoro ma weghara ebe ndịda obodo Syria nke Bosra,
Damaskọs, Beisan (Scythopolis), Pella, Gaza, na nwa oge, Homs (Emesa) na Baalbek (Hierapolis). Heraclius meghachiri omume site n'iziga ìgwè ndị agha nke alaeze ukwu ahụ n'usoro n'usoro megide ndị Alakụba. E meriri ndị Byzantium nke ọma na nnukwu agha nke Ajnadayn na Palestine na Fahl na Yarmouk na Transjordan, ha niile mere na 634-636. Mmeri ndị Alakụba meriri n'ọgbọ agha mere n'ezie ka ndị Byzantium kwụsị iguzogide ha.