The Seljuq Empire and the Two Caliphates
By the mid-11th century CE, the Islamic world was divided between two competing political-religious poles:
- The Abbasid Caliphate in Baghdad: Nominal Sunni religious authority, but real political power held by the Seljuq Sultans (Turkic military rulers who had adopted Sunni Islam)
- The Fatimid Caliphate in Cairo: Ismaili Shia religious authority, with an active da’wa network reaching from Spain and North Africa through Arabia, Persia, and into Central Asia
Nizam al-Mulk’s great project was to strengthen the Sunni-Seljuq pole against the Fatimid challenge — not through military conquest alone but through the transformation of Islamic education.
See also: Abbasid Caliphate, Fatimid Caliphate, Fatimid Cairo
The Nizamiyya Madrasas
The concept: Nizam al-Mulk founded a network of madrasas — formal educational institutions — bearing his name: Nizamiyya. The most famous was the Nizamiyya of Baghdad (established 459 AH / 1067 CE), but the network extended to Isfahan, Nishapur, Herat, Basra, and other cities.
The curriculum: The madrasas taught: Shafi’i jurisprudence, Ash’ari theology (the dominant Sunni theological school, which the Seljuqs promoted against both Mu’tazilism and Ismaili esotericism), Arabic language and literature, and hadith. Graduates became the judges, teachers, and administrators of the Seljuq state.
Al-Ghazali’s chair: The most famous professor at the Nizamiyya of Baghdad was Imam al-Ghazali — appointed at age 33, at the height of his intellectual powers. Al-Ghazali’s Fada’ih al-Batiniyya (the refutation of Ismaili ta’wil) was written during this period, at the request of the Abbasid Caliph al-Mustazhir.
See also: Al Ghazali, Ismaili Philosophy, Taqiyya
Nizam al-Mulk and Ismaili Counter-Strategies
The Fatimid da’wa responded to the Nizamiyya with its own intellectual infrastructure:
- Dar al-Ilm (House of Knowledge) in Cairo — established by al-Hakim bi-Amr Allah in 1004 CE, predating the Nizamiyya
- The majalis al-hikmah — the weekly teaching sessions in Cairo under Fatimid patronage
- The da’wa network — reaching into Persia, Central Asia, and India through trained Da’is
The Nizari response: After the Fatimid Caliphate’s internal split (1094 CE), the Nizari Ismaili Imam Hassan-i Sabbah at the Alamut fortress in Persia developed a more militant form of the da’wa — including the use of fidai (self-sacrificing agents) to assassinate key Sunni officials. Nizam al-Mulk himself was killed by such an agent in 1092 CE.
The historical irony: Both Nizam al-Mulk (founder of the Nizamiyya) and ‘Umar Khayyam (the poet-mathematician) and Hassan-i Sabbah (the Nizari leader) were reportedly students together under the same teacher in Nishapur — a detail that may be legendary but captures the intellectual proximity of these divergent trajectories.
See also: Tayyibi Dawat, Dai Al Mutlaq Institution, Sitr And Zuhur
See also: Abbasid Caliphate, Fatimid Caliphate, Fatimid Cairo, Al Ghazali, Ismaili Philosophy, Taqiyya, Tayyibi Dawat, Dai Al Mutlaq Institution, Sitr And Zuhur