Generally speaking, the teaching of transforming one's consciousness to a felicitous plane, (such as the thirty-three Heavens and the Heavens of Forms in Samsara) is of great importance and value; especially, the Tantric Transformation Yoga designed for the qualified Tantric Yogis. With the power of the unique Samadhi, the Tantric yogi is able to close all eight gates and make the consciousness exit through the Golden Gate. If he can keep the (horse-like) prana, upon which the consciousness rides, from running through the eight gates, he can automatically stop the consciousness from escaping through the eight gates. The yogi should know how to use the words to close the gates and control the consciousness, and he should be able to control the prana at the different gates through the Vase Breathing [practice].

It is difficult to find a clear instruction in the books concerning what kind of words should be used to close the gates. However, according to the Tantra of Sambhoda and Man-snye, only the red Ah word like that of the Ah at the Navel Center should be used. Some say the best teaching is to use a red Hum word instead of Ah to close each gate. This saying proves ignorance of the meaning of the Tantra and of the clear instructions about using the word to close all the nine gates, in the Tantra of Gdan-bzhi and others.

The instruction of Grong-hjug (House Entering) is also called the instruction in the Yoga of Entering Another's Body. Grong (literally, city or house), here implies the physical organs of eye, ear, etc., (for they are like houses wherein the consciousnesses dwell). Says the Sutra of the Paramita Vehicle: "One's consciousness entering into the not-yet-decomposed corpse of another is called Grong-hjug--

[paragraph continues] Entering into Another's House." This teaching is the unique teaching of the Unparalleled Tantra. It frequently appears in the Mother Tantra, and sometimes in the Father Tantra. [**]

What is the purpose of practicing this yoga, or what is this teaching for? Who is qualified to practice it? How is the teaching of this Yoga exercised?

The person who practices this teaching, as well as those who practice the Transformation Yoga, must have well obtained the initiation and observed the Tantric precepts in a perfect manner, etc., as required in the practice of the Arising Yoga.