Imam Ibn Qudamah al-Maqdisi's compendium on Hanbali Jurisprudence, in a 4 volume set. This work covers the doctrine of Imam Ahmed bin Hanbal, and the narrations on his authority and the evidences and intents. Ibn Qudamah (541/1147 - 620/1223) was a notable scholar and thinker of the Hanbali school.