The Mainstay Concerning Jurisprudence-Al-Umda fi 'l-Fiqh-Hanbali

Concerning the Jurisprudence of Imam of the Sunna, Ahmad ibn Hanbal ash-Shaibani (may Allah be well pleased with him) by Imam Mawaffaq ad-Din Abdullah ibn Ahmad ibn Qudama al-Maqdisi (A.H. 541-620).