Book Recommendation About History Of Sufism (Tasawwuf)
The video provided in the following response-link gives a brief summary of four distinct phases of Tasawwuf: Discussion 87674 • Reply 87871 Not sure about the Magnum Opus, but following two books are recommended by Ghamidi Sahab to get a good understanding about Tasawwuf for Urdu readers. Mutala-e-Tasawwuf Wahdatul Wajood ek Ghair Islami Nazariya