Kitab al-Furu' (The Book of Branches) by Shams al-Din Muhammad ibn Muflih al-Hanbali is one of the most comprehensive and authoritative works in the Hanbali school of Islamic jurisprudence. This multi-volume masterpiece meticulously delves into the intricate details and various rulings across all chapters of fiqh, from acts of worship to civil transactions and criminal law. Ibn Muflih, a prominent scholar of the 8th century Hijri, systematically presents legal opinions, often citing earlier Hanbali masters and providing evidence from the Quran and Sunnah. It serves as an indispensable reference for students, scholars, and muftis seeking deep insights into the nuances of Hanbali law. The book's methodical structure and extensive coverage make it a pillar of Islamic legal thought within its madhhab.