Al-Mu'tasim
Abu Ishaq 'Abbas al-Mu'tasim ibn Harun (Arabic: أبو إسحاق عباس المعتصم بن هارون ʾAbū ʾIsḥāq al-Muʿtaṣim ibn Hārūn) (794 – 5 January 842) was an Abbasid caliph (833–842). He succeeded his half-brother al-Ma'mun. In Arabian communities, al-Mu'tasim is an example of the magnanimity, because of the famous incident "Wa Mu'tasimah" (وا معتصماه).
Read more about Al-Mu'tasim: Early Life, Caliphate, Death, Al-Mu'tasim in Literature