Musnad Ahmad ibn Hanbal, compiled by Imam Ahmad ibn Hanbal (رَحِمَهُ ٱللَّٰهُ) (164-241 AH), is a comprehensive collection of hadith organized by the name of the narrator. This structure helps scholars trace the lineage of narrations, enhancing the study of hadith authenticity. It is available in English, Urdu, and Roman Urdu.