A theologian, exegete and polymath
Fakhr al-Din al-Razi was a major Ashari theologian, Shafii jurist, Qurʾan commentator and philosopher whose work transformed later Sunni kalam.
Sources: [2] life evidence, [3] life evidence, [14] life evidence
Fakhr al-Din al-Razi
فخر الدين الرازي
Abu Abd Allah
Abu Abd Allah Muhammad ibn Umar ibn al-Husayn al-Razi al-Tabaristani (preferred birth date 25 Ramadan 543 AH / 6 February 1149 CE; died 1 Shawwal 606 AH / 29 March 1210 CE) was a major Ashari theologian, Shafii jurist, Qurʾan commentator, philosopher and polymath. Born in Rayy, he first studied with his father Diya al-Din Umar and later with leading scholars in theology, philosophy and jurisprudence. He travelled widely through Khurasan, Transoxiana and adjacent regions, debated representatives of competing theological schools, enjoyed the patronage of Khwarazmshahs and Ghurid rulers, and eventually settled in Herat around 600 AH / 1203 CE. His best-known works include Mafatih al-ghayb, al-Mahsul fi ilm usul al-fiqh, al-Arbain fi usul al-din, al-Mabahith al-mashriqiyya, al-Matalib al-aliya and Muhassal afkar al-mutaqaddimin wa-l-mutaakhkhirin. He integrated Avicennan philosophical analysis into Ashari kalam while criticizing several Avicennan doctrines, developed a highly analytical style of tafsir and legal theory, and exerted major influence on later Sunni theology. Reports that he was poisoned by Karramites remain unverified. He died in Herat and, according to biographical tradition, arranged for his burial place to be concealed from hostile opponents.
1149 — 1210
Names and variants
Fakhr al-Din al-Razi· canonicalFakhr al-Din al-Razi· canonicalفخر الدين الرازي· canonicalMuhammad ibn Umar ibn al-Husayn· birth nameمحمد بن عمر بن الحسين· birth nameAbu Abd Allah· kunyaأبو عبد الله· kunyaFakhr al-Din· laqabفخر الدين· laqabal-Razi al-Tabaristani· nisbaIbn Khatib al-Rayy· variantFahreddin er-Râzî· variant
Name and scholarly titles
He was Abu Abd Allah Muhammad ibn Umar ibn al-Husayn al-Razi al-Tabaristani, also known as Ibn Khatib al-Rayy and by the honorific Fakhr al-Din.
Sources: [2] life evidence, [3] life evidence, [14] life evidence
Preferred birth date
The preferred biographical report gives 25 Ramadan 543 AH / 6 February 1149 CE as his birth date in Rayy.
Sources: [2] life evidence, [3] life evidence, [14] life evidence
A variant birth year
Some sources instead place his birth in 544 AH, so the exact chronology is not completely uniform.
Sources: [2] life evidence, [3] life evidence, [14] life evidence
His father as first teacher
His father Diya al-Din Umar, himself a theologian and preacher, was al-Razi’s first teacher.
Sources: [2] life evidence, [3] life evidence, [14] life evidence
Loss of his father
After his father died when al-Razi was about sixteen, he continued his studies outside Rayy.
Sources: [2] life evidence, [3] life evidence, [14] life evidence
Studies in Simnan
He went to Simnan and studied with Kamal al-Din al-Simnani.
Sources: [1] training evidence, [2] training evidence, [3] training evidence
Majd al-Din al-Jili
After returning to Rayy, al-Razi studied theology and philosophy with Majd al-Din al-Jili.
Sources: [1] training evidence, [2] training evidence, [3] training evidence
Study in Maragha
He accompanied al-Jili to Maragha and continued studying with him there.
Sources: [1] training evidence, [2] training evidence, [3] training evidence
Broad early formation
Biographers emphasize his exceptional memory, analytical ability and rapid mastery of theology, law and philosophy.
Sources: [1] training evidence, [2] training evidence, [3] training evidence
Extensive scholarly travel
Al-Razi travelled through major intellectual centers including Jurjan, Tus, Herat, Khwarazm, Bukhara, Samarqand, Khujand, Balkh and Ghazna.
Sources: [1] travels evidence, [2] travels evidence, [3] travels evidence
Debates in Khwarazm
In Khwarazm his disputes with Mutazili scholars provoked serious tensions and contributed to his departure from the region.
Sources: [1] travels evidence, [2] travels evidence, [3] travels evidence
Reputation in Transoxiana
When he later travelled in Transoxiana, some madrasas were already teaching works such as al-Mabahith al-mashriqiyya and his commentary on Ibn Sina’s Isharat.
Sources: [1] travels evidence, [2] travels evidence, [3] travels evidence
A connection in Sarakhs
In Sarakhs he formed a close relationship with the physician Abd al-Rahman ibn Abd al-Karim.
Sources: [1] travels evidence, [2] travels evidence, [3] travels evidence
Commentary on Ibn Sina’s Canon
Al-Razi composed a commentary on Ibn Sina’s medical Canon in connection with his learned circle at Sarakhs.
Sources: [1] medicine evidence, [2] medicine evidence, [3] medicine evidence
Debates in Bukhara
In Bukhara he debated Hanafi jurists on legal questions and Nur al-Din al-Sabuni on theology.
Sources: [1] travels evidence, [2] travels evidence, [3] travels evidence
Debates with Batinis
His disputations with Batini representatives became part of his public reputation as a polemical theologian.
Sources: [1] travels evidence, [2] travels evidence, [3] travels evidence
Conflict with the Karramites
Al-Razi’s disputes with Karramite groups were intense and remained part of the hostile environment surrounding his later career.
Sources: [1] travels evidence, [2] travels evidence, [3] travels evidence
Khwarazmshah patronage
Khwarazmshah rulers including Ala al-Din Tekish and Muhammad extended patronage to al-Razi.
Sources: [1] travels evidence, [2] travels evidence, [3] travels evidence
Ghurid patronage
The Ghurid rulers Ghiyath al-Din and Shihab al-Din were also among the political patrons who honored him.
Sources: [1] travels evidence, [2] travels evidence, [3] travels evidence
Settlement in Herat
After years of travel, al-Razi settled in Herat around 600 AH / 1203 CE and spent the remainder of his life there.
Sources: [1] travels evidence, [2] travels evidence, [3] travels evidence
An unsupported Baghdad-Egypt itinerary
Later claims that al-Razi travelled to Baghdad, suffered mistreatment and then went to Egypt are not supported by the principal biographical evidence.
Sources: [1] travels evidence, [2] travels evidence, [3] travels evidence
A large circle of students
Biographical reports state that his Herat teaching circle eventually included more than three hundred students.
Sources: [1] travels evidence, [2] travels evidence, [3] travels evidence
Notable students
Students associated with him include Qutb al-Din al-Misri, Zayn al-Din al-Kashi, Sharaf al-Din al-Harawi and other later scholars.
Sources: [1] travels evidence, [2] travels evidence, [3] travels evidence
Late wealth and prestige
Sources describe a contrast between his early poverty and the substantial wealth and social prestige he accumulated later through patronage and family connections.
Sources: [1] travels evidence, [2] travels evidence, [3] travels evidence
Shafii jurisprudence
Al-Razi was a Shafii jurist whose legal-theory works became important within the mutakallimun tradition of usul al-fiqh.
Sources: [3] identity evidence, [5] identity evidence, [11] identity evidence
Ashari theology
He worked within the Ashari theological tradition while significantly reshaping its engagement with philosophy and logic.
Sources: [3] identity evidence, [5] identity evidence, [11] identity evidence
Engagement with Ibn Sina
Al-Razi absorbed and critically reworked Avicennan concepts, accepting some analytical tools while rejecting major metaphysical and natural-philosophical doctrines.
Sources: [3] philosophy evidence, [8] philosophy evidence, [13] philosophy evidence
Logic as an independent discipline
Later intellectual historians credited al-Razi with treating logic more fully as an independent discipline rather than only as an instrument of other sciences.
Sources: [3] philosophy evidence, [8] philosophy evidence, [13] philosophy evidence
Al-Mabahith al-mashriqiyya
Al-Mabahith al-mashriqiyya is a major philosophical-theological work engaging questions of ontology, natural philosophy and metaphysics.
Sources: [3] philosophy evidence, [8] philosophy evidence, [13] philosophy evidence
Muhassal afkar al-mutaqaddimin wa-l-mutaakhkhirin
Muhassal offers a concise synthesis of major theological and philosophical positions and became the subject of later commentaries and critiques.
Sources: [3] philosophy evidence, [8] philosophy evidence, [13] philosophy evidence
Al-Arbain fi usul al-din
Al-Arbain arranges major theological questions into forty topics covering divinity, prophecy, eschatology, reward and punishment, and imamate.
Sources: [3] arbain evidence, [6] arbain evidence, [10] arbain evidence
Al-Matalib al-aliya
Al-Matalib al-aliya belongs to al-Razi’s mature theological-philosophical corpus and examines foundational metaphysical and theological questions at length.
Sources: [3] philosophy evidence, [8] philosophy evidence, [13] philosophy evidence
Al-Mahsul in legal theory
Al-Mahsul reorganizes and synthesizes major earlier works of mutakallimun legal theory, including al-Burhan, al-Mustasfa, al-Mutamad and al-Umd.
Sources: [3] mahsul evidence, [5] mahsul evidence, [9] mahsul evidence
Arguments and proof in al-Mahsul
The work places strong emphasis on evidence and argumentative justification while presenting a new systematic arrangement of usul al-fiqh.
Sources: [3] mahsul evidence, [5] mahsul evidence, [9] mahsul evidence
Mafatih al-ghayb
Mafatih al-ghayb, also known as al-Tafsir al-kabir, is al-Razi’s monumental Qurʾan commentary and one of his most influential works.
Sources: [3] tafsir evidence, [4] tafsir evidence, [11] tafsir evidence
A combined transmitted and rational tafsir
The commentary combines transmitted exegesis with extensive rational argument, theology, philosophy, language and legal analysis.
Sources: [3] tafsir evidence, [4] tafsir evidence, [11] tafsir evidence
Defense of Qurʾanic doctrine
Al-Razi states that one purpose of the commentary is to answer attacks on the Qurʾan and strengthen arguments for Islamic belief through rational demonstration.
Sources: [3] tafsir evidence, [4] tafsir evidence, [11] tafsir evidence
A disputed completion history
Some scholars have claimed that al-Razi died before completing Mafatih al-ghayb and that students finished it, while major modern specialists have argued that the whole work is his.
Sources: [3] tafsir evidence, [4] tafsir evidence, [11] tafsir evidence
Jami al-ulum
Jami al-ulum is a Persian encyclopedic work presenting definitions, classifications and selected problems from the sciences known in al-Razi’s period.
Sources: [3] encyclopedia evidence, [7] encyclopedia evidence, [12] encyclopedia evidence
Natural and mathematical sciences
Al-Razi also wrote on logic, astronomy, medicine, mathematics, motion, light and sound, reflecting the unusually broad scope of his learning.
Sources: [3] encyclopedia evidence, [7] encyclopedia evidence, [12] encyclopedia evidence
Critique of atomism
Despite his Ashari affiliation, al-Razi critically reassessed classical kalam atomism and engaged competing philosophical accounts of matter and motion.
Sources: [3] philosophy evidence, [8] philosophy evidence, [13] philosophy evidence
Critique of emanation
He criticized Avicennan theories of emanation and defended divine agency against necessitarian metaphysical models.
Sources: [3] philosophy evidence, [8] philosophy evidence, [13] philosophy evidence
Reason and revelation
Across his mature works al-Razi tested philosophical arguments within a theological framework that ultimately treated revelation as decisive for religious truth.
Sources: [3] philosophy evidence, [8] philosophy evidence, [13] philosophy evidence
Late reflection on kalam and philosophy
Biographical sources and his final testament report a late emphasis on the limits of speculative methods and a stronger appeal to the Qurʾanic path in matters of creed.
Sources: [3] philosophy evidence, [8] philosophy evidence, [13] philosophy evidence
Death in Herat
Al-Razi died in Herat on 1 Shawwal 606 AH / 29 March 1210 CE.
Sources: [2] life evidence, [3] life evidence, [14] life evidence
The poisoning report
Later biographical tradition reports that Karramite opponents poisoned al-Razi, but the claim is not independently established.
Sources: [2] life evidence, [3] life evidence, [14] life evidence
Concealing the grave
Ibn Khallikan reports that al-Razi requested a discreet burial near Muzdahan so hostile opponents could not violate his remains.
Sources: [2] life evidence, [3] life evidence, [14] life evidence
A second burial account
Another account says he was actually buried in his house while a false grave site was indicated outside Herat, leaving the precise burial location uncertain.
Sources: [2] life evidence, [3] life evidence, [14] life evidence
A turning point in post-classical theology
Al-Razi’s synthesis of Ashari kalam, Avicennan philosophy, legal theory and encyclopedic inquiry became a major foundation of post-classical Sunni intellectual life.
Sources: [3] legacy evidence, [9] legacy evidence, [11] legacy evidence
Source-sensitive points
probable
The preferred report places Fakhr al-Din al-Razi's birth on 25 Ramadan 543 AH / 6 February 1149 CE in Rayy.
Sources: [1] Evidence for birth_preferred, [2] Evidence for birth_preferred, [3] Evidence for birth_preferred, [14] Evidence for birth_preferred
reported
Some biographical sources instead give 544 AH as al-Razi's birth year.
Sources: [2] Evidence for birth_544_variant, [3] Evidence for birth_544_variant, [14] Evidence for birth_544_variant
established
Al-Razi's father Diya al-Din Umar was his first teacher in theology and religious learning.
Sources: [1] Evidence for father_teacher, [2] Evidence for father_teacher, [3] Evidence for father_teacher
established
After his father's death al-Razi studied with Kamal al-Din al-Simnani and later Majd al-Din al-Jili.
Sources: [1] Evidence for simnan_jili_training, [2] Evidence for simnan_jili_training, [3] Evidence for simnan_jili_training
established
Al-Razi travelled extensively across Khurasan, Transoxiana and adjacent regions and gained fame through scholarly disputation.
Sources: [1] Evidence for wide_travel, [2] Evidence for wide_travel, [3] Evidence for wide_travel
established
Al-Razi's debates with Mutazili scholars in Khwarazm contributed to tensions that forced him to leave the region.
Sources: [1] Evidence for khwarazm_conflict, [2] Evidence for khwarazm_conflict, [3] Evidence for khwarazm_conflict
established
Al-Razi engaged in major public disputes with Karramite groups during his career.
Sources: [1] Evidence for karrami_conflict, [2] Evidence for karrami_conflict, [3] Evidence for karrami_conflict
established
Al-Razi settled in Herat around 600 AH / 1203 CE and spent the remainder of his life there.
Sources: [1] Evidence for herat_600, [3] Evidence for herat_600, [14] Evidence for herat_600
uncertain
Claims that al-Razi travelled to Baghdad, suffered mistreatment and then went to Egypt are not securely supported by the main biographical evidence.
Sources: [1] Evidence for baghdad_egypt_unverified, [2] Evidence for baghdad_egypt_unverified, [3] Evidence for baghdad_egypt_unverified
reported
Biographical sources report that al-Razi's teaching circle in Herat exceeded three hundred students.
Sources: [1] Evidence for students_300, [2] Evidence for students_300, [3] Evidence for students_300
established
Al-Razi was a Shafii jurist and legal theorist.
Sources: [3] Evidence for shafii_identity, [5] Evidence for shafii_identity, [9] Evidence for shafii_identity
established
Al-Razi was a major Ashari theologian whose work reshaped the school's engagement with philosophy.
Sources: [3] Evidence for ashari_identity, [8] Evidence for ashari_identity, [11] Evidence for ashari_identity
established
Al-Razi made extensive critical use of Avicennan philosophy while rejecting several major Avicennan doctrines.
Sources: [3] Evidence for avicennan_engagement, [8] Evidence for avicennan_engagement, [13] Evidence for avicennan_engagement
established
Al-Mabahith al-mashriqiyya is an authentic major philosophical-theological work of al-Razi.
Sources: [1] Evidence for mabahith_authentic, [3] Evidence for mabahith_authentic, [8] Evidence for mabahith_authentic
established
Muhassal afkar al-mutaqaddimin wa-l-mutaakhkhirin is an authentic theological synthesis by al-Razi.
Sources: [2] Evidence for muhassal_authentic, [3] Evidence for muhassal_authentic, [13] Evidence for muhassal_authentic
established
Al-Arbain fi usul al-din is an authentic work of al-Razi arranged around forty theological questions.
Sources: [3] Evidence for arbain_authentic, [6] Evidence for arbain_authentic, [10] Evidence for arbain_authentic
established
Al-Mahsul fi ilm usul al-fiqh is an authentic major work of al-Razi in legal theory.
Sources: [3] Evidence for mahsul_authentic, [5] Evidence for mahsul_authentic, [9] Evidence for mahsul_authentic
established
Al-Mahsul reorganizes and synthesizes major earlier mutakallimun works of legal theory while emphasizing proof and argument.
Sources: [3] Evidence for mahsul_synthesis, [5] Evidence for mahsul_synthesis, [9] Evidence for mahsul_synthesis
established
Mafatih al-ghayb is al-Razi's authentic monumental Qurʾan commentary.
Sources: [3] Evidence for mafatih_authentic, [4] Evidence for mafatih_authentic, [11] Evidence for mafatih_authentic
established
Mafatih al-ghayb combines transmitted exegesis with rational, theological, philosophical, linguistic and legal analysis.
Sources: [3] Evidence for mafatih_method, [4] Evidence for mafatih_method, [11] Evidence for mafatih_method
disputed
Whether al-Razi personally completed every part of Mafatih al-ghayb has been disputed, although major modern specialists defend complete authorship.
Sources: [3] Evidence for mafatih_completion, [4] Evidence for mafatih_completion, [11] Evidence for mafatih_completion
established
Jami al-ulum is an authentic Persian encyclopedic work of al-Razi on the sciences of his age.
Sources: [3] Evidence for jami_ulum_authentic, [7] Evidence for jami_ulum_authentic, [12] Evidence for jami_ulum_authentic
established
Al-Razi critically reassessed classical kalam atomism and engaged alternative philosophical accounts of matter and motion.
Sources: [3] Evidence for anti_atomism, [8] Evidence for anti_atomism, [13] Evidence for anti_atomism
reported
His final testament and later biographical sources report a late emphasis on the limits of speculative kalam and philosophy and a stronger appeal to the Qurʾanic path.
Sources: [1] Evidence for late_method_reflection, [2] Evidence for late_method_reflection, [3] Evidence for late_method_reflection
established
Al-Razi died in Herat on 1 Shawwal 606 AH / 29 March 1210 CE.
Sources: [1] Evidence for death_exact, [2] Evidence for death_exact, [3] Evidence for death_exact, [14] Evidence for death_exact
reported
A later report claims that Karramite opponents poisoned al-Razi, but this is not independently established.
Sources: [2] Evidence for poisoning, [3] Evidence for poisoning, [14] Evidence for poisoning
disputed
Sources disagree over whether al-Razi was buried near Muzdahan outside Herat or secretly in his own house.
Sources: [2] Evidence for burial_location, [3] Evidence for burial_location, [14] Evidence for burial_location
established
Al-Razi's synthesis of Ashari theology, philosophy, tafsir and legal theory became foundational for later post-classical Sunni scholarship.
Sources: [3] Evidence for postclassical_influence, [9] Evidence for postclassical_influence, [11] Evidence for postclassical_influence
Contributions
Post-classical Ashari theology
Al-Razi transformed Ashari kalam by incorporating and critically reworking Avicennan philosophy, logic and metaphysics.
scholarly · established
Analytical Qurʾanic exegesis
Mafatih al-ghayb became a landmark of rational and encyclopedic tafsir, combining transmitted exegesis with theology, philosophy, language and law.
scholarly · established
Systematization of legal theory
Al-Mahsul reorganized major earlier mutakallimun works into an influential synthesis centered on proof and argumentative structure.
scholarly · established
Philosophical-theological critique
Through works such as al-Mabahith and al-Matalib, al-Razi helped make philosophical analysis a permanent component of later Sunni theology while vigorously criticizing doctrines he rejected.
scholarly · established
Encyclopedic scholarship
His writings across theology, tafsir, law, logic, philosophy, medicine, astronomy and mathematics exemplified an unusually broad model of scholarly inquiry.
scholarly · established
Sources
- [1]Siyar aʿlām al-nubalāʾ
al-Dhahabī · Classical biographical source
- [2]Ṭabaqāt al-Shāfiʿiyya al-kubrā
Taj al-Din al-Subki · Classical Shafiʿi biographical source
- [3]FAHREDDİN er-RÂZÎ
Yusuf Şevki Yavuz · TDV İslâm Ansiklopedisi · 1995
- [4]MEFÂTÎHU’l-GAYB
Lütfullah Cebeci · TDV İslâm Ansiklopedisi · 2003
- [5]el-MAHSÛL
Ferhat Koca · TDV İslâm Ansiklopedisi · 2003
- [6]KİTÂBÜ’l-ERBAÎN
Şerafettin Gölcük · TDV İslâm Ansiklopedisi · 2002
- [7]CÂMİU’l-ULÛM
Rıza Kurtuluş · TDV İslâm Ansiklopedisi · 1993
- [8]al-Mabāḥith al-mashriqiyya
Fakhr al-Din al-Razi · Primary philosophical-theological work
- [9]al-Maḥṣūl fī ʿilm uṣūl al-fiqh
Fakhr al-Din al-Razi · Primary legal theory work
- [10]al-Arbaʿīn fī uṣūl al-dīn
Fakhr al-Din al-Razi · Primary theological work
- [11]Mefātīḥ al-ghayb
Fakhr al-Din al-Razi · Primary Qurʾan commentary
- [12]Jāmiʿ al-ʿulūm
Fakhr al-Din al-Razi · Primary Persian encyclopedic work
- [13]Muḥaṣṣal afkār al-mutaqaddimīn wa-l-mutaʾakhkhirīn
Fakhr al-Din al-Razi · Primary theological synthesis
- [14]Wafayāt al-aʿyān
Ibn Khallikan · Classical biographical source