I was suggested this book by one of my colleague in college times (HUDA BHURGRI) she is a wonderful debater and graduated in English Literature from University of Sindh. The book has all the charms of learning about the Sufism and the relations of Sufis with Supreme authority The GOD. I would refer this book everybody to download this book and read it. while reading it you must concentrate , and forget about the materialistic world for a while.
copy paste the link into your browser and download: