Abstract

Abū Ishāq al-Isfarāyīnī (d. 418/1027) was one of the prominent figures of Khorasan Shafiʻīsm and a jurist among the Aṣḥāb al-Wujūh. He received education in Irāq from important scholars in the fields of theology (kalām), jurisprudence (fiqh), principles of jurisprudence (usul al-fiqh), and hadīth. After returning to Nishabur, he taught at a madrasa built in his name. He trained students such as ʿAbd al-Qāhir al-Baghdādī (d. 429/1037-38), Abū al-Ṭayyib al-Ṭabarī (d. 450/1058), Abu al-Qāsim al-Isqāf al-Isfarāyīnī (d. 452/1060), Abu al-Rabīʿ Ilākī (d. 465/1073), and Abu al-Qāsim al-Qushayrī (d. 465/1072), who later influenced the course of Shāfiʿīsm. He authored works as an important hadith scholar and Ashʿarī theologian. Although most of these works have not survived to the present day, we learn about his views through excerpts from them. He held views, reflected in the prin-ciples of jurisprudence, that led to criticism for being influenced by the Muʿtazila. Despite being a theologian, his adoption of the jurists' method in jurisprudence further emphasizes the importance of his views. The aim of this study is to reveal Abū Ishāq al-Isfarāyīnī's thoughts on the principles of jurisprudence, specifically in the areas of hadīth, consensus (ijmā), indepen-dent reasoning (ijtihād), and imitation (taqlīd), and to identify their reflecti-ons on the Shāfiʿī school of jurisprudence. Since there is no specific study on Abū Ishāq al-Isfarāyīnī’s thoughts on jurisprudence in our country, we beli-eve that this research will contribute to future studies on his legal scholarship.