Abu Mansur al-Baghdadi

'Abd al-Qahir al-Baghdadi
Personal Details
Born Baghdad[1]
Died 429 A.H. (1037 C.E.)[1]
Occupation Mathematician
Religion Islam
Denomination Sunni
Jurisprudence Shafi'i[1]
Creed Ash'ari[2][3]

Abu Mansur 'Abd al-Qahir ibn Tahir al-Baghdadi (Arabic: أبو منصور عبدالقاهر ابن طاهر بن محمد بن عبدالله التميمي الشافعي البغدادي) was a Shafi'i scholar, Imam in fundamentals of Islam (Usul), heresiologist and mathematician.

Early life and education

'Abd al-Qahir al-Baghdadi was born and raised in Baghdad.[4] He received his education in Nishabur and subsequently taught 17 subjects, including law, usul, arithmetic, law of inheritance and theology.[1] Most of the scholars of Khurasan were his pupils.[1] Ibn 'Asakir writes that Abu Mansur met the companions of the companions of Imam al-Ashari and acquired knowledge from them.[5]


'Abd al-Qahir al-Baghdadi wrote several books including Usul al-Din, a systematic treatise, beginning with the nature of knowledge, creation, how the Creator is knos attributes, etc.... and al-Farq bayn al-Firaq which takes each sect separately, judges all from the standpoint of orthodoxy and condemns all which deviate from the straight path.[1] Both books were major works on the beliefs of Ahl al-Sunna.[4]

He also wrote the treatise al-Takmila fi'l-Hisab which contains results in number theory, and comments on works by al-Khwarizmi which are now lost.

See also


  1. 1 2 3 4 5 6 7 Gibb, H.A.R.; Kramers, J.H.; Levi-Provencal, E.; Schacht, J. (1986) [1st. pub. 1960]. Encyclopaedia of Islam (New Edition). Volume I (A-B). Leiden, Netherlands: Brill. p. 909. ISBN 9004081143.
  2. Anthony, Sean (2011). The Caliph and the Heretic: Ibn Sabaʾ and the Origins of Shīʿism. Brill. p. 72. ISBN 9004216065.
  3. Adang, Camilla; Fierro, Maribel; Schmidtke, Sabine (2012). Ibn Hazm of Cordoba: The Life and Works of a Controversial Thinker (Handbook of Oriental Studies) (Handbook of Oriental Studies: Section 1; The Near and Middle East). Leiden, Netherlands: Brill Academic Publishers. p. 387. ISBN 978-90-04-23424-6.
  4. 1 2 Keller, Nuh Ha Mim (1997). Reliance of the Traveller. A classic manual of Islamic Sacred Law. Beltsville, Maryland: Amana Publications. p. 1021. ISBN 0915957728.
  5. McCarthy, Richard J. (1953). The Theology of Al-Ashari. Imprimerie Catholique. p. 179.

Further reading

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