Legal Maxims in Islamic Jurisprudence: The Genre and the Work

Al-Manthur fi al-Qawa'id (also known as Al-Manthur fi al-Qawa'id al-Fiqhiyyah) belongs to the genre of legal maxims literature (qawa'id fiqhiyyah) — a distinctive and important tradition in Islamic jurisprudence that identifies general principles operative across multiple areas of law. The development of this genre from roughly the 7th–10th centuries AH represents one of the most intellectually interesting developments in Islamic legal thought: the attempt to rationalize and systematize the detailed positive law by identifying the higher-level principles that explain and organize it.

The five universally recognized legal maxims of Islamic jurisprudence — known as the 'five major principles' (al-qawa'id al-khams al-kubra) — are: matters are judged by their purposes (al-umur bi-maqasidiha); harm must be removed (al-darar yuzal); custom is authoritative (al-'adat muhakkamah); certainty is not overridden by doubt (al-yaqin la yuzal bish-shakk); and hardship calls forth ease (al-mashaqqah tajlib al-taysir). These five principles, widely accepted across the four Sunni schools, represent the most general level of Islamic legal principle, applying across virtually every domain of positive law.

Az-Zarkashi's Al-Manthur operates primarily at a more specific level — the qawa'id particular to the Shafi'i school rather than the universal cross-school principles. The work is organized alphabetically (in the standard Arabic alphabetical order) by the key term in each maxim, with substantial discussion under each entry of the maxim's meaning, its textual and rational foundations, its scope of application, and the cases that represent exceptions to it. The alphabetical organization reflects the work's function as a reference tool: scholars can look up a maxim by its key term to find az-Zarkashi's analysis.

The approximately 400 maxims analyzed in Al-Manthur cover the full range of Shafi'i positive law, from ritual worship to commercial transactions, family law, and criminal law. The work provides, in effect, a systematic account of the principles that generate and explain Shafi'i doctrine across its entire scope — a different and complementary approach to understanding the school's law from either the detailed fiqh manuals or the theoretical usul al-fiqh works.