Is there a book that reviews the evidence for subsidiary jurisprudential rules and their relationship to major jurisprudential rules?
Two preliminary remarks before the answer: First, legal maxims (al-qawa'id al-fiqhiyyah) are divided into major, medium (some of which fall under the major, and some do not), and specific regulations pertinent to a chapter or part of a chapter. Second, it is not possible to establish an explicit text for every sub-maxim, as some are derived from texts, and some are inferred through ijtihad (independent reasoning).
As for the books that have documented this approach: "Al-Ashbah wa al-Nazair" by Al-Suyuti, who mentioned the origin of each maxim from Hadith and Athar, "Al-Qawa'id al-Fiqhiyyah al-Kubra wa ma Tafarra'a Anha" by Salih Al-Sadlan, and the books of Sheikh Ya'qub Al-Bahusayn on the four major maxims, in which he focused on mentioning the derivative maxims and their evidences.
Summarized from the full answer at Ftawy · reviewed Sep 2, 2026
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