al-Ihkam fi Usul al-Ahkam - Ibn Hazm
- Author died
- 456 AH
- Editions
- Dār al-Āfāq al-Jadīdah
al-Ihkam fi Usul al-Ahkam (The Precision regarding the Principles of Legal Rulings) is a treatise on legal theory (usul al-fiqh) written by the Andalusian scholar Ibn Hazm (384–456 AH / 994–1064 CE) to establish and defend the methodological foundations of the Zahiri (literalist) school of Islamic jurisprudence .
Scope and Methodology
The work provides an exhaustive exposition of legal theory and the derivation of rulings, characterized by biographical sources as reaching the utmost limit of thorough investigation (fi ghayat al-taqassi) . In it, Ibn Hazm grounds all legitimate sources of Islamic legislation exclusively in textual revelation and what directly reduces to it: the Quran, the Sunnah transmitted by reliable narrators or through mass transmission (tawatur), consensus (ijma'), and direct textual indication (dalil), alongside reliance on original presumption of non-liability (al-bara'a al-asliyya) .
A central objective of the book is the systematic refutation of non-textual juristic instruments used by other schools of law. Ibn Hazm rejects analogical deduction (qiyas), juristic preference (istihsan), speculative legal reasoning (ra'y), blind following (taqlid), and the rational attribution of causes to divine rulings (ta'lil) . Throughout his arguments, Ibn Hazm also integrates references to definitions and rules of proof from logic, citing his own handbook on the subject, al-Taqrib li-Hadd al-Mantiq .
Structure and Content
The treatise spans forty chapters, concluding with chapter forty (al-bab al-mufi arba'in), in which Ibn Hazm discusses who is excused for error in legal determinations and establishes that all legal rulings have been clarified by God and are necessarily accessible to the scholarly community as a whole .
Ibn Hazm subsequently authored a concise primer titled al-Nubadh fi Usul al-Fiqh (also known as al-Nubdha al-Kafiya) to summarize the essential principles established in his comprehensive major work on usul, explaining in its preface that he designed the smaller text to facilitate memorization and provide an accessible stepping stone to the detailed arguments and proofs of the larger compendium .
Transmission and Editions
In classical manuscript descriptions, the book was commonly recorded in two large volumes . In the modern era, the work was edited by the Egyptian scholar Ahmad Muhammad Shakir and published in Cairo across eight parts between 1345 and 1348 AH, and this edition was later reprinted in Beirut by Dar al-Afaq al-Jadidah with an introduction by Ihsan Abbas .
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