Abbasid Caliphs

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The Abbasid caliphs were the holders of the Islamic title of caliph who were members of the Abbasid dynasty, a branch of the Quraysh tribe descended from the uncle of the Islamic prophet Muhammad, Al-Abbas ibn Abd al-Muttalib.

Abbasid Caliphs (750–1258)

The Abbasids came to power overthrowing Umayyad dynasty in the Abbasid Revolution. As caliphs[1], they held both temporal and religious suzerainty over Muslim lands. After a golden age and a temporary revival, their decline accelerated the fragmentation of the Muslim world into autonomous states. Their religious authority was also challenged by the Shi'a Fatimid Caliphate (909-1171) and the Caliphate of Córdoba (929-1031). The caliphs lost their temporal power completely in mid-tenth century; first to a series of military strongmen, then to the Shi'a Buyid Emirs, which were in turn replaced by the Sunni Seljuk Turks. Their independence from the Seljuks was short-lived, as the dynasty ended with the Mongol Sack of Baghdad in 1258.

No. Name Reign Parents[a] Notable Events
Regnal[b] Personal
Abbasid Consolidation
(750-775)
1 al-Saffāḥ
السفّاح
Abū’l-ʿAbbās ʿAbd Allāh
أبو العباس عبدالله
750 – 8 June 754 (4 years)
2 al-Manṣūr
المنصور
Abū Jaʿfar ʿAbd Allāh
أبو جعفر عبد الله
10 June 754 – 775

(21 years)

Abbasid Golden Age
(775-861)
3 al-Mahdī bi-'llāh
المهدي بالله
Abū ʿAbd Allāh Muḥammad
أبو عبد الله محمد
775 – 4 August 785

(10 years)

4 al-Hādī
الهادي
Abū Muḥammad Mūsā
أبو محمد موسى
August 785 – 14 September 786

(1 year)

  • Nominated first heir by his father al-Mahdi.
  • Restarted Alid persecutions, leading to a failed revolt (786).
  • Tried to disinherit his brother, al-Rashid, in favor of his own son.
  • Possibly poisoned by his mother, who favored his brother, al-Rashid.
5 al-Rashīd
الرشيد
Abū Jaʿfar Hārūn
أبو جعفر هارون
14 September 786 – 24 March 809

(23 years)

  • Nominated second heir by his father al-Mahdi.
  • Established the House of Wisdom in Baghdad.
  • Fall of the Barmakids (803).
  • Invasion of Asia Minor. Sack of Herakleia (806).
6 al-Amīn
الأمين
Abū Mūsā Muḥammad
أبو موسى محمد
March 809 – 25 September 813

(4 years)

  • Nominated first heir by his father al-Rashid.
  • Tried to remove his half-brother al-Ma'mun from line of succession, beginning the Fourth Fitna.
  • Deposed and killed during the Siege of Baghdad.
7 al-Maʾmūn
المأمون
Abū'l-ʿAbbās ʿAbd Allāh
أبو العباس عبد الله
September 813 – 9 August 833

(20 years)

8 al-Muʿtaṣim bi-’llāh
المعتصم بالله
Abū Isḥāq Muḥammad
أبو إسحاق محمد
9 August 833 – 5 January 842

(9 years)

  • According to al-Tabari, appointed as successor by his brother al-Ma'mun on his deathbed.[6]
  • Establishment of the Turkic ghilman in positions of power.
  • Samarra founded as the new capital (836).
  • Invasion of Asia Minor. Sack of Amorium (838)
9 al-Wāthiq bi-'llāh
الواثق بالله
Abū Jaʿfar Hārūn
أبو جعفر هارون
5 January 842 – 10 August 847

(5 years)

  • Nominated heir by his father.
  • Died from dropsy, while seated in an oven in an attempt to cure it.[7]
10 al-Mutawakkil ʿalā 'llāh
المتوكل على الله
Jaʿfar
جعفر
10 August 847 – 11 December 861

(14 years)

  • End of official support for Mu'tazilism. Abolition of the miḥnah (851).
  • Assassinated by his guards with the support of his son al-Muntasir.
Anarchy at Samarra
(861-870)
11 al-Muntaṣir bi-'llāh
المنتصر بالله
Abū Jaʿfar Muḥammad
أبو جعفر محمد
861 – 8 June 862

(1 year)

  • Nominated first heir by his father, al-Mutawakkil.[8] Succeeded him after his assassination.
  • Died of illness. Possibly poisoned.
12 al-Mustaʿīn bi-ʾllāh
المستعين بالله
Aḥmad
أحمد
862–866

(4 years)

  • Cousin of al-Muntasir. Installed by Turkic troops.
  • Defeated in the Fifth Fitna, and forced to abdicate.
  • Executed soon afterwards on the orders of his successor, al-Mu'tazz.
13 al-Muʿtazz bi-ʾllāh
المعتز بالله
Abū ʿAbd Allāh Muḥammad
أبو عبد الله محمد
866–869

(3 years)

  • Nominated second heir by al-Mutawakkil, but bypassed when his cousin al-Musta'in was installed by the Turkic military.[9]
  • Overthrew al-Musta'in with the help of Turkic troops.
  • Attempted to curb the power of the Turkic military elite.
  • Autonomous Saffarid rule in Sistan (867) and Tulunid rule in Egypt (868).
  • Deposed and imprisoned by the Turkic generals; died three days later.
14 al-Muhtadī bi-'llāh
المهتدي بالله
Abū Isḥāq Muḥammad
أبو إسحاق محمد
869 – 21 June 870

(1 year)

Abbasid Revival
(870-908)
15 al-Muʿtamid ʿalā ’llāh
المعتمد على الله
Abū'l-ʿAbbās Aḥmad
أبو العباس أحمد
21 June 870 – 15 October 892

(22 years)

  • Installed by Turkic military.
  • Real power held by his brother al-Muwaffaq and later his nephew al-Mu'tadid, who controlled the military.
  • Repulsion of the Saffarid rebellion (876).
  • Subjugation of the Zanj Revolt (883).
  • Autonomous Samanid rule in Transoxiana (891).
  • Put under house arrest after a failed escape to Tulunid Egypt (882).
16 al-Muʿtaḍid bi-'llāh
المعتضد بالله
Abū'l-ʿAbbās Aḥmad
أبو العباس أحمد
October 892 – 5 April 902

(20 years)

  • Al-Muwaffaq, Abbasid prince and Commander-in-chief
  • Dirar (Hariz), Greek concubine
  • al-Mu'tamid's nephew. Added his name in line of succession and removed his cousin as heir.
  • Recovery of Jazira, Thughur, Jibal.
  • Return of the capital to Baghdad (892).
  • Start of the Qarmatian missionary activities and raids.
17 al-Muktafī bi-'llāh
المكتفي بالله
Abū Muḥammad ʿAlī
أبو محمد علي
5 April 902 – 13 August 908

(6 years)

  • Son and nominated heir of al-Mu'tadid.
  • Recovery of Egypt and Syria from the Tulunids (905).
Political fragmentation
(908-945)
18 al-Muqtadir bi-'llāh
المقتدر بالله
Abū'l-Faḍl Jaʿfar
أبو الفضل جعفر
13 August 908 – 929

(21 years)

19 al-Qāhir bi-'llāh
القاهر بالله
Abū al-Manṣūr Muḥammad
أبو المنصور محمد
929 (<1 year)
(18) al-Muqtadir bi-'llāh
المقتدر بالله
Abū'l-Faḍl Jaʿfar
أبو الفضل جعفر
929 – 31 October 932

(3 years)

(19) al-Qāhir bi-'llāh
القاهر بالله
Abū al-Manṣūr Muḥammad
أبو المنصور محمد
31 October 932 – 934

(2 years)

  • Installed by Mu'nis al-Muzaffar
  • Deposed, blinded and imprisoned by vizier Ibn Muqla after refusing to abdicate.
  • Freed by al-Mustakfi eleven years later. Spent rest of his life as a beggar, dying in 950.[11]
20 al-Rāḍī bi-'llāh
الراضي بالله
Abū'l-ʿAbbās Aḥmad/Muḥammad
أبو العباس أحمد/محمد
934 – 23 December 940

(6 years)

  • Originally nominated heir by his father al-Muqtadir, but sidelined by Mu'nis in favor of his uncle, al-Qahir, who imprisoned him.
  • Made caliph after al-Qahir's deposition.
  • Autonomous Ikhshidid rule in Egypt (935).
  • Creation of the office of amīr al-umarāʾ as the de facto ruler.
21 al-Muttaqī li-'llāh
المتقي لله
Abū Isḥāq Ibrāhīm
أبو إسحاق إبراهيم
940–944

(4 years)

  • Selected by amir al-umara Bajkam after the death of his brother, al-Radi.
  • Deposed and blinded by amir al-umara Tuzun. Died in 968.
22 al-Mustakfī bi-ʾllāh
المستكفي بالله
ʿAbd Allāh
عبد الله
September 944 – 29 January 946

(2 years)

  • Installed by the amir al-umara Tuzun after the deposition of his nephew, al-Muttaqi.
  • Buyid takeover of Baghdad (945).
  • Deposed and blinded. Died under house arrest in 949.
Buyid Control
(945-1055)
23 al-Muṭīʿ li-ʾllāh
المطيع لله
Abū'l-Qāsim al-Faḍl
أبو القاسم الفضل
29 January 946 – 974

(28 years)

  • Went into hiding upon his uncle al-Muktafi's enthronement, who sought to have him captured.
  • Installed by the Buyid Amir Mu'izz al-Dawla.
  • Egypt, Palestine and Hejaz lost to Fatimids (969).
  • Byzantine reconquests under Nikephoros II. Fall of Antioch (969).
  • Induced to abdicate with his health as a pretext by Turkic generals.
24 al-Ṭāʾiʿ li-amri ʿllāh
الطائع لأمر الله
Abd al-Karīm
عبد الكريم
974–991

(17 years)

  • Nominated heir of al-Muti.
  • Buyid civil wars.
  • Byzantine reconquests continue under John I.[12]
  • Deposed by the Buyid Amir Baha' al-Dawla. Died in 1003.
25 al-Qādir bi-'llāh
القادر بالله
Aḥmad
أحمد
1 November 991 – 29 November 1031

(40 years)

Seljuk Control
(1055-1157)
26 al-Qāʾim bi-amri 'llāh
القائم بأمر الله
Abu Ja'far Abdallah
أبو جعفر عبد الله
29 November 1031 – 2 April 1075

(44 years)

27 al-Muqtadī bi-amri ’llāh
المقتدي بأمر الله
Abū'l-Qāsim ʿAbd Allāh
أبو القاسم عبد الله
2 April 1075 – February 1094

(19 years)

  • Grandson and heir of al-Qa'im.
  • Temporary recognition of Abbasid authority (proclamation of khutbah in Mecca) in Arabia due to decrease of Fatimid power and Seljuk bribes.[14]
28 al-Mustaẓhir bi-'llāh
المستظهر بالله
Abū l-ʿAbbās Aḥmad
أبو العباس أحمد
February 1094 – 6 August 1118

(24 years)

29 al-Mustarshid bi-'llāh
المسترشد بالله
Abū'l-Manṣūr al-Faḍl
أبو المنصور الفضل
6 August 1118 – 29 August 1135

(17 years)

  • Nominated heir by his father.
  • Almohad Caliphate rule in the Maghreb (1121) and al-Andalus (1173).
  • Failed military campaign against Seljuks (1135).
  • Murdered, possibly by the Assassins.
30 al-Rāshid bi-'llāh
الراشد بالله
Abu Jaʿfar al-Manṣūr
أبو جعفر المنصور
29 August 1135 – 1136

(1 year)

31 al-Muqtafī li-ʾamri ’llāh
المقتفي لأمر الله
Abū ʿAbd Allāh Muḥammad
أبو عبد الله محمد
1136 – 12 March 1160

(24 years)

  • Uncle of al-Rashid. Installed by Sultan Ghiyath ad-Din Mas'ud
  • Failed Seljuk Siege of Baghdad (1157).
Final Revival
(1157-1258)
32 al-Mustanjid bi-'llāh
المستنجد بالله
Abū'l-Muẓaffar Yūsuf
أبو المظفر يوسف
12 March 1160 – 20 December 1170

(10 years)

  • Son and heir of al-Muqtafi.
  • Formal independence from Seljuks; removal of Sultan's name from Abbasid coinage (1165).
33 al-Mustaḍīʾ bi-amri ʾllāh
المستضيء بأمر الله
al-Ḥasan
الحسن
20 December 1170 – 30 March 1180

(10 years)

  • Son and heir of al-Mustanjid.
  • End of the Fatimid Caliphate (1171). Restoration of Abbasid nominal authority in Egypt under Saladin.
34 al-Nāṣir li-Dīn Allāh
الناصر لدين الله
Abu'l-ʿAbbās Aḥmad
أبو العباس أحمد
2 March 1180 – 4 October 1225

(45 years)

35 al-Ẓāhir bi-amri’llāh
الظاهر بأمر الله
Abu Nasr Muḥammad
أبو نصر محمد
5 October 1225 – 11 July 1226

(1 year)

  • Heir and son of Al-Nasir.
36 al-Mustanṣir bi-'llāh
المستنصر بالله
Abū Jaʿfar al-Manṣūr
أبو جعفر المنصور
11 July 1226 – 2 December 1242

(16 years)

  • Heir and son of Al-Zahir.
  • Almohad withdrawal from al-Andalus (1228).
37 al-Mustaʿṣim bi-'llāh
المستعصم بالله
ʿAbd Allāh
عبد الله
2 December 1242 – 20 February 1258

(16 years)

  • Heir and son of Al-Mustansir.
  • Mamluk overthrow of Ayyubids in Egypt (1250).
  • Last Abbasid caliph.
  • Executed after the Mongol sack of Baghdad.
  • End of Abbasid Caliphate as a political and religious entity.


Abbasids Caliphs of Cairo (1261–1517)

In 1261, the Abbasid dynasty was re-established by a cadet branch of the dynasty at Cairo under the auspices of the local Mamluk sultans, but these caliphs were purely ceremonial figures, while temporal power rested with the Mamluks.[15][16] This revived caliphate lasted until the Ottoman conquest of Egypt in 1517, after which the caliphal title passed to the Ottoman dynasty.

No. Name Reign Parents Notable Events
Regnal Personal
1 al-Mustanṣir bi-llāh
المستنصر بالله
Abū'l-Qāsim Aḥmad
أبو القاسم أحمد
13 June 1261 – 28 November 1261

(<1 year)

  • Uncle of Al-Musta'sim, the last Abbasid caliph in Baghdad.
  • Installed in Cairo by Mamluk sultan Baybars.[15]
  • Killed by a Mongol ambush while on his way to recover Baghdad.
2 al-Ḥākim bi-Amri'llāh I
الحاكم بأمر الله الأول
Abū'l-ʿAbbās Aḥmad
أبو العباس أحمد
16 November 1262 – 19 January 1302

(40 years)

Abu Ali Hasan ibn Abu Bakr ibn Hasan
  • Claimed great-great-great grandson of the Abbasid caliph Al-Mustarshid (r. 1118-1135).
  • Installed by the ruler of Aleppo, Aqqush.
  • Proclaimed as caliph in Cairo by Baybars after al-Mustansir II died.[15]
3 al-Mustakfī bi-llāh I
المستكفي بالله الأول
Abū ar-Rabīʾ Sulaymān
أبو الربيع سليمان
20 January 1302 – February 1340

(38 years)

Al-Hakim I
    4 al-Wāthiq bi-'llāh I
    الواثق بالله الأول
    Abū ʾIsḥāq ʾIbrāhīm
    أبو إسحاق إبراهيم
    February 1340 – 17 June 1341

    (1 year)

    Ahmad ibn al-Hakim (son of al-Hakim I)
      5 al-Ḥākim bi-Amri'llāh II
      الحاكم بأمر الله الثاني
      Abū'l-ʿAbbas ʾAḥmad
      أبو العباس أحمد
      1341–1352

      (11 years)

      Al-Mustakfi I
      6 al-Muʿtaḍid bi-'llāh I
      المعتضد بالله الأول
      Abū al-Fatḥ Abū Bakr
      أبو الفتح أبو بكر
      1352–1362

      (10 years)

        7 al-Mutawakkil ʿalā'llāh I
        المتوكل على الله الأول
        Abū ʿAbd Allāh Muḥammad
        أبو عبد الله محمد
        1362–1377

        (15 years)

        Al-Mu'tadid I
        • First reign. Deposed.
        8 al-Mustaʿṣim bi-'llāh
        المستعصم بالله
        Abū Yaḥya Zakarīyāʾ
        أبو يحيى زكريا
        1377

        (<1 year)

        Al-Wathiq I
        • First reign.
        (7) al-Mutawakkil ʿalā'llāh I
        المتوكل على الله الأول
        Abū ʿAbd Allāh Muḥammad
        أبو عبد الله محمد
        1377–1383

        (6 years)

        • Second reign.
        9 al-Wāthiq bi-'llāh II
        الواثق بالله الثاني
        Abū Ḥafṣ ʿUmar
        أبو حفص عمر
        September 1383 – 13 November 1386

        (3 years)

        Al-Wathiq I
          (8) al-Mustaʿṣim bi-'llāh
          المستعصم بالله
          Abū Yaḥya Zakarīyāʾ
          أبو يحيى زكريا
          1386–1389

          (3 years)

          • Second reign.
          (7) al-Mutawakkil ʿalā'llāh I
          المتوكل على الله الأول
          Abū ʿAbd Allāh Muḥammad
          أبو عبد الله محمد
          1389 – 9 January 1406

          (17 years)

          • Third reign.
          10 al-Mustaʿīn bi-'llāh
          المستعين بالله
          Abū al-Faḍl al-ʿAbbas
          أبو الفضل العباس
          22 January 1406 – 9 March 1414

          (8 years)

          • Became Sultan of Egypt from 7 May – 6 November 1412, as a titular figurehead for Shaykh al-Mahmudi.
          11 al-Muʿtaḍid bi-'llāh II
          المعتضد بالله الثاني
          Abū al-Fatḥ Dāwud
          أبو الفتح داود
          1414–1441

          (27 years)

            12 al-Mustakfī bi-llāh II
            المستكفي بالله الثاني
            Abū al-Rabīʿ Sulaymān
            أبو الربيع سليمان
            1441 – 29 January 1451

            (10 years)

            13 al-Qāʾim bi-ʾamr Allāh
            القائم بأمر الله
            Abū al-Baqāʾ Ḥamza
            أبو البقاء حمزة
            1451–1455

            (4 years)

            14 al-Mustanjid bi-'llāh
            المستنجد بالله
            Abū al-Maḥāsin Yūsuf
            أبو المحاسن يوسف
            1455 – 7 April 1479

            (24 years)

            15 al-Mutawakkil ʿalā'llāh II
            المتوكل على الله الثاني
            Abū al-ʿIzz ʿAbd al-ʿAzīz
            أبو العز عبد العزيز
            5 April 1479 – 27 September 1497

            (18 years)

              16 al-Mustamsik bi-'llāh
              المستمسك بالله
              Abū al-Ṣabr Yaqūb
              أبو الصبر يعقوب
              1497–1508

              (11 years)

              Al-Mutawakkil II
              • First reign. Abdicated.[17]
              17 al-Mutawakkil ʿalā'llāh III
              المتوكل على الله الثالث
              Muḥammad
              محمد
              1508–1516

              (8 years)

              Al-Mustamsik
              • First reign.
              (16) al-Mustamsik bi-'llāh
              المستمسك بالله
              Abū al-Ṣabr Yaqūb
              أبو الصبر يعقوب
              1516–1517

              (1 year)

              • Second reign. Abdicated.
              (17) al-Mutawakkil ʿalā'llāh III
              المتوكل على الله الثالث
              Muḥammad
              محمد
              1517

              (<1 year)

              Genealogy

              Abbasid Family tree. The Caliphs of Baghdad in Green, those at Cairo in Golden. Unless a year of death is given, the caliphs ruled till death.
              al-Abbas
              d. 653
              Abd Allah
              d. 687
              Ali
              d. 736
              Muhammad
              d. 743
              al-Saffah
              r. 750–754
              al-Mansur
              r. 754–775
              al-Mahdi
              r. 775–785
              al-Hadi
              r. 785–786
              al-Rashid
              r. 786–809
              al-Amin
              r. 809–813
              al-Mamun
              r. 813–833
              al-Muta'sim
              r. 833–842
              al-Wathiq
              r. 842–847
              al-Mutawakkil
              r. 847–861
              Muhammad
              al-Muhtadi
              r. 869–870
              al-Munstasir
              r. 861–862
              al-Mu'tazz
              r. 866–869
              al-Mu'tamid
              r. 870–892
              al-Muwaffaqal-Musta'in
              r. 862–866
              al-Mu'tadid
              r. 892–902
              al-Muktafi
              r. 902–908
              al-Muqtadir
              r. 908–932
              al-Qahir
              r. 932–934
              d. 950
              al-Musktafi
              r. 944–946
              d. 949
              al-Radi
              r. 934–940
              al-Muttaqi
              r. 940–944
              d. 968
              al-Muti
              r. 946–974
              d. 974
              al-Qadir
              r. 991–1031
              al-Ta'i
              r. 974–991
              d. 1003
              al-Qa'im
              r. 1031–1075
              Muhammad
              d. 1056
              al-Muqtadi
              r. 1075–1094
              al-Mustazhir
              r. 1094–1118
              al-Mustarshid
              r. 1118–1135
              al-Muqtafi
              r. 1136–1160
              Alial-Rashid
              r. 1135–1136
              d. 1138
              al-Mustanjid
              r. 1160–1170
              Hasanal-Mustadi
              r. 1170–1180
              Abu Bakral-Nasir
              r. 1180–1225
              Hasanal-Zahir
              r. 1225–1226
              al-Hakim I
              r. 1262–1302
              al-Mustansir II
              r. 1261
              al-Mustansir
              r. 1226–1242
              Ahmadal-Mustakfi I
              r. 1302–1340
              al-Musta'sim
              r. 1242–1258
              al-Wathiq I
              r. 1340–1341
              d. after 1341
              al-Hakim II
              r. 1341–1352
              al-Mu'tadid I
              r. 1352–1362
              al-Mu'tasim
              r. 1377, 1386–1389
              d. 1389
              al-Wathiq II
              r. 1383–1386
              al-Mutawakkil I
              r. 1362–1383, 1389–1406
              al-Mu'tadid II
              r. 1414–1441
              al-Mustakfi II
              r. 1441–1451
              al-Qa'im
              r. 1451–1455
              d. 1458
              al-Mustanjid
              r. 1455–1479
              al-Musta'in
              r. 1406–1414
              d. 1430
              al-Mutawakkil II
              r. 1479–1497
              al-Mustamsik
              r. 1497–1508, 1516–1517
              d. 1521
              al-Mutawakkil III
              r. 1508–1516, 1517
              d. 1543


              Notes

              1. Most Abbasid caliphs were born to a concubine mother, known as umm al-walad (Arabic: أم الولد, lit.'mother of the child'). The term refers to a slave woman who had a child from her owner; they could not be sold by their owner and the children born were considered legitimate, legally free and with full rights of inheritance.[2] These concubines mostly were Abyssinians, Armenians, Berbers, Byzantine Greeks, Turkic or even from Sicily.[3][4][5]
              2. Abbasids began the tradition of adopting theologically loaded laqabs as regnal honorifics, which was continued by later rival caliphates of Fatimids, Almohads, and Umayyads of Cordoba. Every Abbasid caliph till 1258 adopted a unique laqab.

              References

              1. "List of Rulers of the Islamic World | Lists of Rulers | Heilbrunn Timeline of Art History | The Metropolitan Museum of Art". The Met’s Heilbrunn Timeline of Art History. Retrieved 2023-06-30.
              2. "Umm al-Walad". Oxford Islamic Studies. Archived from the original on September 24, 2015.
              3. "The golden age of Islam (article)". Khan Academy. Retrieved 2023-06-30.
              4. Khan, Syed Muhammad (19 October 2021). "خاندان بنو عباس". عالمی تاریخ انسائیکلوپیڈیا (in Urdu). Retrieved 2023-06-30.
              5. "Roznama Dunya: اسپیشل فیچرز :- خلافت عباسیہ کا خاتمہ". Roznama Dunya: اسپیشل فیچرز :-. Retrieved 2023-06-30.
              6. Bosworth 1987, pp. 222–223, 225.
              7. Kennedy 2006, p. 232.
              8. Bosworth, "Mu'tazz," p. 793
              9. Bosworth, "Mu'tazz," p. 793
              10. Zetterstéen & Bosworth 1993, pp. 476–477.
              11. Sourdel 1978, p. 424.
              12. "John I Tzimisces | Byzantine Empire, Military Campaigns, Iconoclasm | Britannica". www.britannica.com. Retrieved 2024-10-16.
              13. Bennison, Amira K. (2009) The Great Caliphs: The Golden Age of the 'Abbasid Empire. Princeton: Yale University Press, p. 47. ISBN 0300167989
              14. Halm, Heinz (2014). Kalifen und Assassinen: Ägypten und der vordere Orient zur Zeit der ersten Kreuzzüge, 1074–1171 [Caliphs and Assassins: Egypt and the Near East at the Time of the First Crusades, 1074–1171] (in German). Munich: C. H. Beck. p. 32. doi:10.17104/9783406661648-1. ISBN 978-3-406-66163-1.
              15. Bosworth 1996, p. 9.
              16. Houtsma & Wensinck 1993, p. 3
              17. Holt, P. M. (1984). "Some Observations on the 'Abbāsid Caliphate of Cairo". Bulletin of the School of Oriental and African Studies, University of London. 47 (3): 501–507. doi:10.1017/S0041977X00113710. ISSN 0041-977X. JSTOR 618882.
              18. El-Hibri 2021, pp. 275–276.

              Bibliography