Abu Ishaq al-Shirazi
Shāfiʿī jurisconsult
Abū Isḥāq Ibrāhīm ibn ʿAlī al-Shīrāzī (Arabic: أبو إسحاق الشيرازي; 1003–1083) 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 of 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."
Name
He is Shaykh al-Islam, Abu Ishaq Ibrahim b.
“Abu Ishaq al-Shirazi” enters the record as shāfiʿī jurisconsult. Crown Archives preserves that source wording while asking what Ishaq, al-Shirazi and Shāfiʿī can confirm, complicate or overturn.
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The citation trail is more important than the brevity of the summary: it shows where individual claims can be examined in context. The source revision retrieved here is dated Jun 14, 2026. The linked authority identifier is Q3603848. The first chronological checks are 1003, 1083, 1120 and 1072.
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