The monograph is devoted to a comprehensive consideration of the heritage of one of the classics of medieval Sufism - Mahmoud Shabistari (1288-1321). He is best known as the author of the poem "The Flower Garden of Secrets," which summarizes the main issues of Sufi thought. The author of this monograph seeks not only to present the content of the worldview of medieval Sufi, but also to help the reader immerse himself in the world of medieval Muslim mysticism. Such immersion is possible due to the fact that Shabistari's views are considered in the context of his cultural environment, and the book itself is built on the basis of the basic principles of Islamic culture. The book is intended for a wide range of readers.