Divinity Atlas
Usul al-fiqh Is Not One Theory, It Is Four Schools Disagreeing About What Counts as a Source
Usul al-fiqh asks not what the law is but how it is known: what counts as a source, how sources are ranked, and what a jurist may do when the sources fall silent. Four schools of Islamic law hold a distinct account of it in this atlas, Hanafi, Hanbali, Maliki and Jafari, and all four accept the Quran and the Sunna as a starting point. Past that starting point each school draws the boundary of legal theory somewhere different, and the differences are not small.
Three Sunni Schools, Three Different Boundaries
The Hanafi school accepts istihsan, juristic preference, as a source, a method al-Shafii attacked directly, and distinguishes fard from wajib, an obligation resting on decisive evidence from one resting on secondary evidence, a distinction the other schools do not draw. The Hanbali school accepts istishab, the presumption of continuity, and holds most closely to the transmitted texts, admitting fewer supplementary sources than any of the other three. The Maliki school also accepts istihsan, and gives maslaha, the public interest, a standing that has made this school central to modern reformist legal theory. Each of the three treats the same starting material, the Quran and the Sunna, and licenses a different further move beyond it.
A Fourth School Working From a Different Center
The Jafari school, the legal theory of Twelver Shia Islam, admits aql, reason, in the place analogical reasoning occupies in Sunni theory, and restricts what counts as consensus to the agreement that discloses the position of the imam, a criterion with no equivalent in any of the three Sunni accounts. Where the Sunni schools argue among themselves about how far to extend reasoning from a shared textual base, the Jafari school reasons from a different center entirely, the imam's own disclosed position, which is why grouping all four under one heading of legal theory understates rather than overstates how differently each answers the same question: what is Islamic law actually made of.
Where To Read More
- Usul al-fiqhReligious LawThe discipline itself, a genuine four-way split rather than one repeated position
- Hanafi SchoolAccepts istihsan; distinguishes fard from wajib
- Hanbali SchoolAccepts istishab; holds closest to the transmitted texts of the four
- Maliki SchoolAccepts istihsan and gives maslaha, public interest, real standing
- Jafari SchoolAdmits aql in reasoning's place and centers consensus on the imam's own disclosed position