Rubuta ci gaba don wannan sakin layi - Halifa Uthman (), wanda ya kasance daga dangin Umayyad, ya nada Abu al-A'war a matsayin gwamnan Jund al-Urdunn (yankin sojan Jordan) tare da babban birninsa a Tiberias. A lokacin yakin basasa na Musulmi na farko
A cikin yakin da aka yi da Khalifa Ali (a.s.) a shekara ta 1616 bayan kisan gilla na Uthman, Abu al-A'war ya kasance ɗaya daga cikin janar-janar na Mu'awiya a yaƙe-yaƙe da Khalifa Ali (a.s.). Ya umurci rundunar Sulaymi a yakin Siffin a shekara ta 657. Bayan yaƙe-yaƙe a Siffin, Abu al-A'war yana ɗaya daga cikin wakilan Mu'awiya a cikin tattaunawar sasantawa tare da Ali, kuma ya shirya daftarin farko don taron maye gurbin khalifa a Adhruh, wani gari a tsaunukan Sharat. A cikin 658/59, Mu'awiya ya tabbatar da Abu al-A'war a matsayinsa a Jordan.