Musnad Ahmad is a significant collection of hadith, which are the sayings and actions of the Prophet Muhammad. Compiled by the Islamic scholar Ahmad ibn Hanbal in the 9th century, it is one of the largest hadith collections, featuring over 30,000 narrations. The work is organized by the names of the companions of the Prophet, making it easier for scholars to trace the sources of each hadith. The collection is highly regarded in the Islamic tradition, particularly among the Hanbali school of thought. It emphasizes authentic narrations and provides insights into various aspects of Islamic teachings, including law, ethics, and spirituality. Musnad Ahmad remains a vital resource for scholars and students of Islam today.