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Al-Amir bi-Ahkami'l-Lah

Manṣūr ʾAbū ʿAlī
Arabic: الآمر بأحكام الل‎‎
al-Āmīr bi'Aḥkāmi’l-Lāh
Predecessor al-Musta'li
Successor al-Hafiz Hafizi
At-Tayyib Abu'l-Qasim Taiyabi Ismaili
Born 31 December 1096
Cairo
Died Tuesday, 3rd Zu-l-qada, 524 AH / 7 October 1130 (aged 34)
Issue at-Tayyib Abu'l-Qasim
Full name
ʾAbū ʿAlī Manṣūr al-Āmīr
Father al-Musta'li
Full name
ʾAbū ʿAlī Manṣūr al-Āmīr

Manṣūr al-Āmir bi'Aḥkāmi’l-Lāh (Arabic: منصور الآمر بأحكام الله‎‎‎; 31 December 1096 – 7 October 1130 (Tuesday 3 Dhu'l-Qadah 524 AH) was the tenth Fatimid Caliph (1101–1130) and the 20th Isma'ili Imam of the Musta'li sect of Shia Islam.

Like his father al-Musta'li (1094–1101), al-Amir was controlled by the regent al-Afdal Shahanshah (1094–1121) and had little influence in political matters. However, after the assassination of al-Afdal in 1121 AD he managed to gain control of government. His reign was marred by the loss of Tyre to the Crusaders as well as by the continuation of the schism between the Nizari and the Mustaali. This conflict climaxed in the assassination of al-Amir on Tuesday, October 7, 1130 (3rd Dhu al-Qi'dah, 524 AH).

According to the chronicle of Ibn al-Muyassar (d. 1278): "In Rabi al-awwal [of 524 AH] Qasim al-Tayyib was born to al-Amir;... Cairo was decorated. New suits of clothes were issued to the troops...at the 'aqiqa ceremony... in the presence of al-Amir... the child was brought in, and Chief Qadi Ibn al-Muyassar was given the honour of holding it...the palace was filled with fruits and other sweets[.]"

Al-Amir was assassinated and Da'i Ibn Madyan supported the Imamate of the young child while his half-uncle, al-Hafiz, was entrusted as regent. This arrangement did not last much, al-Afdal Shahanshah expressed his enmity to al-Hafiz and aimed to take over the Caliphate. He imprisoned al-Hafiz.


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