Nyorai kuenderera mberi kwechikamu chino - Al-Abbas ibn Musa ibn Isa () (akafa 815) aiva nhengo duku yeumambo hweAbbasid. Akabata nzvimbo dzakasiyana-siyana mukupera kwezana ramakore rechisere uye kutanga kwezana ramakore rechipfumbamwe, uye akaita basa rinotsigira muzviitiko zveFitna yechina
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