Bayan yaƙe-yaƙe na Ridda, wani basaraken kabilar arewa maso gabashin Arabiya, Al-Muthanna ibn Haritha, ya kai hari a garuruwan Sasaniya a Mesopotamiya ( Iraƙi ta yau).Tare da nasarar hare-haren, an tattara ganima mai yawa.Al-Muthanna bn Haritha ya tafi Madina don sanar da Abubakar nasarar da ya samu, kuma aka nada shi kwamandan mutanensa, bayan haka ya fara kai hare-hare a cikin Mesofotamiya.Ta yin amfani da motsin dawakinsa masu haske, cikin sauƙi zai iya afkawa kowane gari da ke kusa da hamada kuma ya sake ɓacewa cikin hamada, wanda sojojin Sasaniya ba za su iya ba.Ayyukan Al-Muthanna sun sa Abubakar ya yi tunani game da faɗaɗa daular Rashidun .Don tabbatar da nasara, Abubakar ya yanke hukunci guda biyu game da harin Farisa : na farko, sojojin da suka kai hari za su kunshi 'yan agaji gaba daya;Na biyu kuma shi ne ya sanya mafificin janar nasa Khalid bn al-Walid.Bayan ya ci nasara a kan Musaylimah da ya yi kiran kansa da sunan Annabi Musaylima a yakin Yamama, Khalid yana nan a Al-Yamama lokacin da Abubakar ya umarce shi da ya mamaye daular Sassanid.Da yake Al-Hirah ya zama makasudin Khalid, Abubakar ya aika da sojoji tare da umurci shugabannin kabilu na arewa maso gabashin Larabawa, Al-Muthanna ibn Haritha, Mazhur bin Adi, Harmala da Sulma, da su yi aiki karkashin jagorancin Khalid.A wajen mako na uku ga watan Maris 633 (makon farko ga Muharram 12 ga Hijira) Khalid ya tashi daga Al-Yamama da runduna dubu 10.Sarakunan kabilan, tare da mayaka 2,000 kowanne, suka shiga tare da shi, suka kara girman matsayinsa zuwa 18,000.