Faqīh

A Faqīh (plural Fuqahā') (Arabic: , pl. فقهاء‎‎) is an Islamic jurist, an expert in fiqh, or Islamic jurisprudence and Islamic Law. (While most expert in Islamic jurisprudence are Muslims and Faqīh, some non-Muslims also study fiqh.)

Islamic jurisprudence or fiqh is the human understanding of the Sharia (believed by Muslims to represent divine law as revealed in the Quran and the Sunnah (the teachings and practices of the Islamic prophet Muhammad)) —sharia expanded and developed by interpretation (ijtihad) of the Quran and Sunnah by Islamic jurists (Ulema) and implemented by the rulings (Fatwa) of jurists on questions presented to them.

Fiqh deals with the observance of rituals, morals and social legislation in Islam. In the modern era there are four prominent schools (madh'hab) of fiqh within Sunni practice and two (or three) within Shi'a practice.

The historian Ibn Khaldun describes fiqh as "knowledge of the rules of God which concern the actions of persons who own themselves bound to obey the law respecting what is required (wajib), sinful (haraam), recommended (mandūb), disapproved (makrūh) or neutral (mubah)". This definition is consistent amongst the jurists.

...
Wikipedia