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Al-Ma'mun was an Abbasid caliph of the ninth century, son of Harun al-Rashid. He loved learning and books, and translation flourished at the House of Wisdom in Baghdad in his reign — which also saw the Mihna that tested the scholars. He ruled about twenty years and died in 833 CE.
Abd Allah al-Ma'mun ibn Harun al-Rashid, seventh Abbasid caliph (198–218 AH / 813–833 CE), took power after his brother al-Amin was deposed and died in the brothers' civil war; he ruled from Merv before returning to Baghdad. His reign is famous for the translation movement at the House of Wisdom and for patronage of philosophy, astronomy and geography, including the celebrated measurement of the earth. On its other side was the Mihna: he imposed the Mu'tazili doctrine of the created Qur'an as a test on judges and scholars, and Ahmad ibn Hanbal was jailed for refusing — an episode Sunni memory reads as state intrusion into belief. Al-Ma'mun died at Tarsus in 218 AH; his brother al-Mu'tasim succeeded him.
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Abd Allah al-Ma'mun ibn Harun al-Rashid (198–218 AH / 813–833 CE), seventh Abbasid caliph, was acclaimed after the deposition of his brother al-Amin in the civil war that besieged Baghdad; he stayed in Khurasan for years before returning to Baghdad in 204 AH. His reign is bound to the height of the translation movement: the House of Wisdom became the centre of rendering Greek, Persian and Sanskrit works, and the caliph patronized scientific projects like the measurement of the earth's circumference at Sinjar and the verification of astronomical tables, and is remembered loving debate and the sessions of the mutakallimun. On the same coin of state power was the Mihna: in 218 AH, shortly before his death, al-Ma'mun imposed on the judges the Mu'tazili declaration of the created Qur'an and tested the scholars on it; Ahmad ibn Hanbal resisted and was punished under al-Mu'tasim, who continued the policy — in Sunni memory the emblem of the state's quarrel with the fuqaha. Al-Ma'mun died on campaign at Tarsus in 218 AH and his brother Abu Ishaq al-Mu'tasim succeeded; his era stands in history as both the height of early Abbasid civilization and its doctrinal crisis.
Overview
Abd Allah al-Ma'mun ibn Harun al-Rashid, an Abbasid caliph. He was given allegiance in Baghdad after the deposition of his brother al-Amin in 196 AH, and died in 218 AH. 1 2 Al-Tabari mentions the Mihna of the Qur'an in his reign. 3
His upbringing and affair
Al-Suyuti says that he was born on the night of the death of his uncle al-Hadi and the allegiance of his father, in 170 AH. 4 Al-Mas'udi says that al-Rashid said of him that he recognised in him the firmness of al-Mansur and the asceticism of al-Mahdi, and that his mother was a Badhghisi woman called Maraji. 9
Al-Mas'udi says that at the start of his affair, when al-Fadl ibn Sahl had the upper hand over him, he leaned toward considering astrological judgements. When he came to Iraq he gave that up, sat with the theologians, favoured the disputants, and kept the jurists and men of letters in his session, paying them their stipends. He describes him as the most forgiving of people and the most generous with money. 8
His caliphate
Al-Suyuti says that he marched in 204 AH and entered Baghdad in Safar, and that in 218 AH he tested the people with the doctrine that the Qur'an was created. 5 He says that among the caliphs only Uthman ibn Affan and al-Ma'mun had memorised the Qur'an. 6
Al-Mas'udi says that he died at al-Badidun, at the spring of al-Qushayra, in 218 AH at the age of forty-nine, and was buried in Tarsus. 10
What is not covered here: the views of modern studies on the Mihna and on his policy. Further sources are needed.
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Connections
- Related to
- Abu al-Salt Abd al-Salam ibn Salih· Abu Muslim, mustamli of Yazid ibn Harun· al-Hasan ibn Sahl· بوران بنت الحسن بن سهل· محمد بن سعد كاتب الواقدي· محمد بن زياد الأعرابي· النضر بن شميل· Salm, master of the House of Wisdom· يحيى بن أكثم· Yahya ibn Ma'in· Bayt al-Hikma — the House of Wisdom
- Participated in
- Census of the Descendants of al-Abbas in the Year 200· al-Ma'mun's designation of Ali al-Rida as heir· Clash of Tahir ibn al-Husayn with Ali ibn Isa· The Conquest of Crete· The Accession of Harun al-Rashid· The Division of the Caliphate among al-Rashid's Sons· Kabul Shah's Submission to al-Ma'mun· al-Ma'mun Enters Egypt· Al-Ma'mun's embassy for the Greek books· al-Ma'mun's Proclamation Disavowing Whoever Praised Mu'awiya· The Court's Wooing of Transoxania· The Marriage of al-Ma'mun and Buran· Qumm's Revolt and Re-Conquest· The Sack of Zibatra and al-Mu'tasim's Retaliation· Siege of Baghdad in the war of al-Amin and al-Ma'mun
People and things also explored
Harun al-Rashid· محمد الأمين بن هارون الرشيد· Bayt al-Hikma — the House of Wisdom· Al-Ma'mun's embassy for the Greek books· The Marriage of al-Ma'mun and Buran· Salm, master of the House of Wisdom· al-Mu'tasim Abu Ishaq ibn al-Rashid· طاهر بن الحسين
Sources
- Tarikh al-Rusul wa'l-Muluk — al-Tabari (ed. Abu al-Fadl Ibrahim) , j.8 p.428
- Tarikh al-Rusul wa'l-Muluk — al-Tabari (ed. Abu al-Fadl Ibrahim) , j.8 p.646
- Tarikh al-Rusul wa'l-Muluk — al-Tabari (ed. Abu al-Fadl Ibrahim) , j.8 p.631
- Tarikh al-Khulafa — al-Suyuti (Dar al-Minhaj edition) , p. 456
- Tarikh al-Khulafa — al-Suyuti (Dar al-Minhaj edition) , p. 487-489
- Tarikh al-Khulafa — al-Suyuti (Dar al-Minhaj edition) , p. 496-497
- Tarikh al-Khulafa — al-Suyuti (Dar al-Minhaj edition) , p. 502,515
- Muruj al-Dhahab — al-Masʼudi , p. 672
- Muruj al-Dhahab — al-Masʼudi , p. 337-340
- Muruj al-Dhahab — al-Masʼudi , p. 399-402
- Muruj al-Dhahab — al-Masʼudi , p. 410-411
- Muruj al-Dhahab — al-Masʼudi , p. 686-687
- al-Farghani, Elementa astronomica (Golius, Amsterdam 1669)
Cite this page
islam.museum contributors. “Abd Allah al-Ma'mun ibn Harun al-Rashid”. islam.museum, https://islam.museum/en/person/abd-allah-al-mamun/. CC BY-SA 4.0. Last updated 2026-10-29.