As strongly emphasized by His Holiness the Sakya Trichen, the second book of this box set is intended only for people who have at least received the great initiation of Hevajra in the Lamdré tradition:
“People who are to read and recite this Ornament to Beautify the Three Continua, composed by the omniscient Ngorchen Könchok Lhundrup, the treatise for entering the main subject of the Teaching, the Path with the Result possessing eleven great features, must definitely have obtained the authentic [Hevajra] initiation. Otherwise, if you enter however you like, without anything such as the initiation, there are very grave negative consequences. So everyone should be careful.”
—From the Foreword by His Holiness the Sakya Trichen
Visit the book’s page here.