Whakakiia te rerenga e whai ake nei: I te c. 800, I whakanohoia a Abd al-Malik hei kaiwhakaako mo te tama a Harun, a al-Qasim. Na tona rongonui me tana mana ki te ope i kore ai a Harun e whakawhirinaki ki a ia, a i te tau 803 ka hopukina ia ka maka ki te whare herehere. Ko te take tonu kaore i te marama, ahakoa ko te nuinga o nga korero e whakaae ana ko tana ake tama, ko Abd ar-Rahman, i korero ki te Caliph e kii ana kei te whakamahere ia ki te whakakahore ia ia. I mauheretia a Abd al-Malik tae noa ki te matenga o Harun e ono tau i muri mai, i te wa i mate ai te Caliph al-Amin (r. 809<unk>813) i tukuna ia.
I tautohetia te whakaurunga o Al-Amin e tana tuakana-tuakana-tuakana a al-Ma'mun, ana he raruraru i Hiria. He nui tonu te mana o Abd al-Malik ki nga hoia rohe, no reira i tohua ia hei kawana o Hiria me Upper Mesopotamia me te mahi ki te tiaki i enei rohe mo al-Amin me te whakaara i nga hoia ki te tu atu ki a al-Ma'mun. Heoi, i muri noa iho i te taenga atu ki tana nohoanga i Raqqa, ka mate a Abd al-Malik ka mate. I whakangaromia tana urupa i etahi tau i muri mai e te wikitoria a al-Ma'mun, na te mea i oati a Abd al-Malik kia kaua e whakaae ki te ture a al-Ma'mun.