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Al-Mustansir Bi'llah (full name:Abû Ja`far al-Mustansir bi-llah al-Mansûr ben az-Zâhir[3] Surname Al-Mustansir)[4] was born in Baghdad on 1192. On his father's death in 1226 he has succeeded his father Az-Zahir as the thirty-sixth Abbasid Caliph. Al-Mustansir died on 5 December 1242.[5] His son Al-Musta'sim succeeded him as the caliph.

Abû Ja`far al-Mustansir bi-llah al-Mansûr ben az-Zâhir
ابو جعفر المستنصر باللہ المنصور بن الظاھر
36th Caliph of the Abbasid Caliphate
Abbasid Caliph in Baghdad
Reign10 July 1226 – 5 December 1242
Born17 February 1192 [1]
Baghdad, Abbasid Caliphate, now Iraq
Died5 December 1242 (aged 50)
Baghdad, Abbasid Caliphate, now Iraq
ConsortShahan ,Hajir[2]
ReligionSunni Islam
The Courtyard of Mustansiriya Medical College

Mustansiriya Madrasah, was established in 1227 (or 1232/34 A.D. by some accounts) by the Abbasid Caliph Al-Mustansir and is one of the oldest universities in the world. Its building, located on the left bank of the Tigris River, survived the Mongol invasion and has been restored.


  1. ^ Ibn Kathir: Albidayah Wa-Nahaya, V. XIII. p. 147
  2. ^ Al-Hawadith al-Jami'a . Ibn al-Fuwaṭi
  3. ^ Arabic : abū jaʿfar al-mustanṣir bi-llāh al-manṣūr ben aẓ-ẓāhir,
    أبو جعفر المسنتصر بالله المنصور بن محمد الظاهر
  4. ^ Arabic : Al-Mustanṣir, المسنتصر بالله
  5. ^ 10 Jumada ath-thani 640 A.H.


Al-Mustansir (Baghdad)
Cadet branch of the Banu Hashim
Born: 17 February 1192 Died: 5 December 1242
Sunni Islam titles
Preceded by
Caliph of Islam
Abbasid Caliph

10 July 1226 – 5 December 1242
Succeeded by