Shaarei Tzedek - Gates of Righteousness

As Moshe Idel demonstrated, this book is incorrectly attributed to Rabbi Shem Tov Sefardi de Leon. Its apparently true author is a direct disciple of Avraham Abulafia, Natan ben Saadyah Harar. He describes instructions he received from his teacher, believed to be Aubulafia himself, along with his ecstatic experiences. This gives the book unparalleled importance, as auto-biographical works in Kabbalah are extremely rare. Additionally, he explains in detail many kabbalistic techniques, the very ones he employed to reach his prophetical states. The full text is a reconstruction based upon the four original known manuscripts, which in general have some notable differences or omissions.