Gulshan i raz: the mystic rose garden of Sa'd ud din Mahmud Shabistari. The Persian text, with an English translation and notes, chiefly from the commentary of Muhammad bin Yahya Lahiji

This book & its reading are a Spritual delight, worth reading again & again.

This downloadable version does not seem to have the Persian text. The mathison.org has the entire book. The Persian starts at page 179 but it is awkward to use it is just plain pdf. Maybe by the kindle, and put up the downloaded PDF side by side to follow

One of the most important Sufi texts, which in a nutshell, explains what "enlightenment" is, insofar as it is remotely possible to put this into words.