Shams al-Din b. Muflih was one of the leading authorities in Hanbali

Hanbali

The Hanbali school is one the schools of Fiqh or religious law within Sunni Islam. The jurisprudence school traces back to Imam Ahmad ibn Hanbal but was institutionalized by his students. Hanbali jurisprudence is considered very strict and conservative, especially regarding questions of dogma...

 Law who received his tutelage amongst several prominent Hanbali figures, including Ibn Taymiyah. He gave particular attention to the juristic preferences of Ibn Taymiyah, and included them in his voluminous and renowned masterpiece on Hanbali jurisprudence

Fiqh

Fiqh is Islamic jurisprudence. Fiqh is an expansion of the code of conduct expounded in the Quran, often supplemented by tradition and implemented by the rulings and interpretations of Islamic jurists....

 known as al-Furu’.