Islamic jurisprudence

Islamic jurisprudence (fiqh) is the study of Islamic law and of how its rulings are derived from the Qur'an, the Sunna, consensus and analogy.

Al-Shafi’i (767–820) gave its legal theory (usul al-fiqh) a classic form, and Al-Shaybani wrote early on the law of war and peace. Later jurists include Ibn Hazm of the literalist Zahiri school, Al-Mawardi on government, Al-Shatibi on the purposes (maqasid) of the law, and Shah Waliullah in eighteenth-century India. Sunni and Shi'i schools differ on some sources and methods. On this site it answers questions on disagreement and expertise (2.7.1), divine command ethics, informal reasoning, causation and free will.