Imām Ali ibn Musa al-Ridha: A Historical and Biographical Research delves into the life of the 8th Shia Imam, tracing his lineage, early life, and the significant events during his imamate. The book explores his profound knowledge, spiritual leadership, and his pivotal role in defending and promoting the principles of Islam during a tumultuous political climate, including his relationship with the Abbasid Caliph Ma'mun. Through a detailed examination of his teachings, dialogues, and martyrdom, this work sheds light on the immense influence Imām al-Ridha had on Islamic scholarship and the Shia community. It also provides reflections on his ethical teachings and the significance of his shrine in Mashhad.