Abdul Qadir al-Jilani (1077–1166 CE) is a revered Islamic scholar, mystic, and theologian, known for his influential teachings and spiritual leadership. Born in the Iranian province of Gilan, he later settled in Baghdad, where he founded the Qadiriyya Sufi order, one of the most widespread Sufi orders in the Islamic world. Al-Jilani emphasized the importance of spiritual purification, inner devotion, and adherence to Islamic principles in achieving closeness to God. His sermons and writings, collected in works such as "Ghunyat al-Talibin" (Sufficiency of the Seekers), continue to inspire millions of Muslims worldwide. Al-Jilani's profound spiritual insights and teachings earned him the title of "al-Ghawth al-A'zam" (the Greatest Helper), and he remains a revered figure in Islamic spirituality, with his tomb in Baghdad serving as a place of pilgrimage for believers seeking blessings and guidance.