This essential work by Muhammad Abdullah Zarman offers a foundational introduction to the profound science of Islamic Sufism. The book methodically explores the origins, historical development, and core principles of this spiritual path. It delves into the lives and teachings of prominent Sufi masters, clarifying key concepts such as tariqa (the path), dhikr (remembrance), and the pursuit of spiritual excellence (ihsan). Designed for beginners and researchers alike, this text serves as an accessible guide to the rich spiritual heritage and practices that define Sufism within the broader Islamic tradition.