 Ramba uchiverenga ndima ino - Iri izita remhuri rinowanzorinopiwa kumadzimambo eBaghdad, wechipiri pamadzimambo makuru maviri echiSunni oUmambo hweArabhu. VaAbbasid vakaparadzamadzimambo eUmayyad anobva munyika dzawo dzose kunze kweSpain. VaAbbasid vakapfuuridzira mutemo wevaUmayyad maererano neYemen. Kazhinji kazhinji, nhengo yevanoremekedzwa zvikurusa veAbbasid, kubatanidza machinda edzinza, vaishumira savabati. Asi Yemen yakaramba yakaparadzaniswa: munyori wenhau dzakaitika al-Yaqubi d. 897 rinotaura nezvemapurovhinzi 84 uye nhamba huru yendudzi. Mabasa evaAlids akatyisidzira kubata kwevaAbbasid pamusoro peYemen. Ibrahim ibn Musa al-Kazim, munununa waAlid Ali ar-Ridha anozivikanwa zvikuru, akatora Sana nenzvimbo dzakakwirira muna 815 uye akadhinda mari muzita rake. Zvisinei, akakurumidza kukundwa nemauto aCaliph al-Mamun. Kunyange zvakadaro, pashure pokunge caliph asvika pakunzwisisa naAlids, Ibrahim ibn Musa iyeye akagadzwa gavhuna weMecca neYemen. Sana yakaramba iri pasi pokutonga kwaKhalifa kwenguva yakati. Zvisinei, mukupera kwezana remakore rechi9, simba revaAbbasid munzvimbo dzakasiyana-siyana rakaderera. Madzimambo omunharaunda dzeYemeni akatanga kuoneka, anga achishora vaAbbasids kana kuti achivagamuchira. 