Al-Musnad al-Imām al-Aʿẓam Mawlā ʿAlī ibn Mūsā al-Riḍā (ʿalayh al-salām) is a groundbreaking scholarly work authored by Dr. Junaid Ali Haider. This book holds the distinction of being the first musnad-style collection in the 1,400-year history of Ahl al-Sunnah wa’l-Jamāʿah entirely dedicated to the noble narrations of Imām ʿAlī ibn Mūsā al-Riḍā (ʿalayh al-salām), the eighth Imām from the Ahl al-Bayt (ʿalayhim al-salām). Written in classical Arabic, the book contains 340 narrations, each meticulously documented with complete chains of transmission (isnāds). What makes this work truly unique is that all the hadiths are sourced exclusively from the authentic Sunni hadith corpus, including major collections such as those of al-Bukhārī, Muslim, Abū Dāwūd, al-Tirmidhī, al-Nasāʾī, Ibn Mājah, and others. This musnad not only revives the voice of an often-overlooked figure in Sunni hadith literature but also bridges the scholarly gap between Ahl al-Sunnah and the Ahl al-Bayt by presenting the profound teachings of Imām al-Riḍā (ʿalayh al-salām) through the lens of Sunni tradition. It stands as a testament to academic rigor, inter-sectarian respect, and historical preservation, making it a valuable resource for scholars, students of hadith, and lovers of the Ahl al-Bayt alike.