This profound book, authored by the distinguished Islamic historian Dr. Ali Muhammad al-Sallabi, offers an in-depth and meticulously researched biography of Imam Abd al-Qadir al-Jilani, one of the most revered and influential figures in Islamic history and a foundational personality in Sufism. Al-Sallabi comprehensively examines al-Jilani's life, teachings, spiritual lineage, and enduring impact on the Muslim world, drawing from authentic historical and religious sources. The work illuminates his scholarly contributions, his pivotal role as a spiritual guide, and his extensive legacy, providing readers with a holistic understanding of his immense influence on both Islamic jurisprudence and spirituality. It is an essential read for anyone seeking to explore the life and wisdom of this exceptional scholar and saint.