This practice requires the student to have permission/empowerment received from a qualified master in order to engage in the self-generation of the deity. However, it is permitted to do this practice without such an empowerment as long as you do not generate yourself as the deity. Instead, you should generate the deity at the crown of your head or in front of you instead of self-generation.

This Heruka Vajrasattva Tsog offering was written by Lama Yeshe. About the practice he said, “What follows is a tsog offering ceremony specifically designed to be performed in conjunction with the highest yoga tantra aspect of Vajrasattva. The Tibetan term tsog, which is often left untranslated, literally means “collection,” or “assembly,” and in the following practice it is often rendered as “pure offering.” However, the actual tsog is one’s meditation on transcendental, blissful wisdom.

The entire purpose of offering the tsog ingredients is to generate the experience of this blissful wisdom within oneself and to overcome the ordinary appearance and conception of sensory objects. Thus, it is extremely important that from the very beginning of this practice you prevent ordinary appearances and conceptions from arising. Because the offering of tsog is a profound method for transcending mundane thought, the entire practice should go beyond your ordinary experience of subject
and object.”

32 pages, 2012 edition.