This book is very in depth and very informative. Its not like any other tafsir I've ever read. Thats probably due to the fact that this material is for the ascetics/sufi. Nevertheless it is a good buy. I'd definitely suggest it as a buy for someone interested in a mystical view/path of Islam. This book would be a good buy for someone who is considered 'knoweledgeable' and actually enjoys studying the din. It is not a good buy for new muslims, children or someone who cannot spend the time to absorb the subjects being taught or feelings being conveyed through the elucidations and commentaries of the writters. I also dont know much about the authors as far as their accredidation/ijaza so if that plays a factor, and it should, you may want to research their names and find out a little bit more about them and their sources of knoweledge.