Abu Ishaq al-Shirazi

Abū Isḥāq al-Shīrāzī
أبو إسحاق الشيرازي
TitleAmir al-Mu'minin fī al-Fiqh
Shaykh al-Islam
Personal life
Born1003
Died1083 (aged 7980)
NationalityPersian
EraIslamic Golden Age
Main interest(s)Fiqh (Islamic jurisprudence), Usul al-Fiqh (principles of jurisprudence), Usul al-Din, 'Aqidah, Tawhid, Kalam (Islamic theology), Hadith studies
Notable work(s)
  • Al-Tanbih fi al-Fiqh al-Shafi'i
  • Al-Muhadhdhab fi Fiqh al-Imam al-Shafi'i
  • Al-Luma' fi Usul al-Fiqh
  • Al-Ishara ila Madhhab Ahl al-Haqq
  • Tabaqat al-Fuqaha
  • Al-Nukat fi al-Masa'il al-Mukhtalaf fiha bayna al-Shafi'i wa Abi Hanifa
Religious life
ReligionIslam
DenominationSunni
JurisprudenceShafi'i
CreedAsh'ari
Muslim leader
SuccessorAbu Sa'd al-Mutwalli

Abū Isḥāq Ibrāhīm ibn ʿAlī al-Shīrāzī (Arabic: أبو إسحاق الشيرازي) was a prominent Persian jurisconsult, legal theoretician, theologian, debater and muhaqqiq (researcher). He was one of the leading scholars of Shafiʿi jurisprudence in the eleventh century and arguably the most prolific writer of Islamic legal literature.

He became the second teacher after succeeding Ibn al-Sabbagh at the Nizamiyya school in Baghdad, which was built in his honour by the vizier (minister) of the Seljuk Empire Nizam al-Mulk.

He acquired the status of a mujtahid in the field of fiqh and usul al-fiqh. The contemporary muhaddithun (hadith specialists) also considered him as their Imam. Likewise, he was respected and enjoyed a high status among the mutakallimun (practitioners of kalam) and Sufis.

He was closely associated with the eminent Sufis of his time like Abu Nasr ibn al-Qushayri (d. 514/1120), the son of al-Qushayri (d. 465/1072).

Abu Bakr al-Shashi said: "Abu Ishaq is Allah's proof on the leading scholars of the time." Al-Muwaffaq al-Hanafi said: "Abu Ishaq is the Amir al-Mu'minin (Prince of the Believers) from among the fuqaha' (jurists)." The Azhari scholar 'Ali Jum'a, an inheritor of al-Bajuri's teachings, calls him the "shaykh of the fuqaha' of his era."