al-Tamhid fi Takhrij al-Furu alaa al-Usul
- Author died
- 772 AH
- Editions
- Mu'assasat al-Risalah
al-Tamhid fi Takhrij al-Furu alaa al-Usul (The Preparation in Deriving Substantive Branches from Legal Principles) is a treatise on legal theory (usul al-fiqh) and substantive law (furu') by the Shafi'i jurist Jamal al-Din al-Isnawi (d. 772 AH / 1370 CE) . The book demonstrates how substantive legal rulings and intra-school disagreements within the Shafi'i school are systematically derived from foundational principles of jurisprudence .
Purpose and Scope
Al-Isnawi composed the work after authoring a concise work on theoretical legal maxims, intending to provide a comprehensive manual that encompasses the majority of legal-theoretical issues and illustrates the method of deriving applied branches from them . He aimed to clarify the legal premises relied upon by earlier Shafi'i scholars, provide an authoritative guide for instructors and muftis, and train jurists in formulating evidence and reaching the rank of legal derivation (takhrij) . The substantive rulings included in the work were drawn from rare works, gathered from non-standard locations, or formulated directly by al-Isnawi himself . During the composition of this book, he also embarked on a companion work applying the same method to Arabic grammar, titled al-Kawkab al-durri fi-ma yutakharraj ala al-usul al-nahwiyya min al-furu al-fiqhiyya .
In the introduction to al-Kawkab al-durri, al-Isnawi claimed that none of his Shafi'i predecessors had authored works combining substantive jurisprudence with legal theory and Arabic grammar in this specific manner . Later scholars have noted that this claim is challenged by the earlier work Takhrij al-furu ala al-usul of the Shafi'i jurist Shihab al-Din al-Zanjani (d. 656 AH), unless al-Isnawi intended novelty specifically in restricting the derivation to internal disagreements within the Shafi'i school .
Structure and Method
The book is structured following the organization of legal theory manuals:
- Introductory Chapters: Following the general introduction, the text opens with two foundational chapters: a chapter on the legal ruling (al-hukm al-shar'i) comprising nineteen issues, and a chapter on the constituent elements of the ruling (arkan al-hukm al-shar'i) comprising six issues .
- Main Body: The remainder is divided hierarchically into books (kutub), chapters (abwab), sections (fusul), and issues (masa'il) representing principles of usul, under which corresponding substantive branches and intra-Shafi'i points of difference are derived .
Al-Isnawi restricted the application of branches almost exclusively to the Shafi'i school, examining internal disagreements rather than comparative inter-school debates .
Influence and Publication
Al-Isnawi encouraged jurists of other legal schools to apply his methodology to their respective traditions . Subsequently, scholars from other schools adopted his approach, including Muhammad ibn Abd Allah al-Timirtashi (d. 1004 AH) in the Hanafi school and the author of Kashf al-fawa'id fi tamhid al-qawa'id .
The text was first printed in Mecca at al-Matba'a al-Majdiyya in 1353 AH, though this edition suffered from misreadings and textual errors . A critical edition prepared by Muhammad Hasan Hitu was published in Damascus in 1391 AH / 1972 CE, and later republished in Beirut in 1401 AH / 1981 CE .
Answer updated