“Islami Tasawwuf Mein Ghair Islami Nazriyat ki Amezish” is an important research and intellectual work by Professor Yusuf Saleem Chishti, presenting a critical and analytical study of the historical evolution of Islamic mysticism and the blending or influence of external or non-Islamic doctrines within it. This book helps readers understand the distinction between the true concept of Tasawwuf and extraneous ideas that penetrated it. It serves as a valuable reference book for students, researchers, and readers interested in Islamic Tasawwuf and intellectual history.