If through both the inner and outer daytime practice, one is able to proceed with the entering, remaining, and dissolving process in the Central Channel, the well-known Four Blisses and Four Voids will arise. Then the identity of Bliss-Void during the emergence of the Innate-Born can be practised. Eventually the Illusory Body will arise. By means of this practice, one will be able to impress the Bliss-Void feeling on all manifestations at all times. Thus the

[paragraph continues] (identity) of manifestation and Mandala (practice of Tantrism) is exercised.

What is the reason for relying on the remaining two Wheels to practice the Sleep-Light and Illusory-Dream? Because in sleep the pranas will naturally gather in the Heart Center, and with the power of gathering the prana in the Central Channel and through the mental concentration on the Central Channel Heart-Center, the prana of Ro-ma and Rkyang-ma will gather in the Central Channel-Heart Center, and its power will be very great. Consequently, the Four Voids, especially the All-Void, will appear. If one can guard this light of Samadhi for a long period, through its power in daytime, one will be able to gather a greater portion of prana in the Central Channel where it will become more steady than before.

If the light-of-sleep becomes steady, it will help the path greatly. With it, the power of meditation will increase, without it, the power will decrease. This is extremely important for those who have not attained the ultimate accomplishment in this life and expect to attain the ultimate enlightenment at the time of death. This practice is superior to the teaching of (merely) recognizing the Light-of Death.

After the emergence of the light-of-sleep, if one knows how to radiate or raise up the superb Illusory Dream-Body, through its power the daytime practice on the Illusory Body will become more powerful and steady. If one cannot attain the ultimate in this life and puts his hope in the moment of death, he must have the ability of holding the light with prana and must practice this teaching of Illusory Body of Dream. Thus he will be able to identify the Illusory Body of Bardo. Without these practices

it would be impossible to do so; therefore, these two instructions are unique and of great importance.

The instructions on the actual practice of the Illusory Body and the Light Yoga follow:

In addition to the teachings given in the last chapter--the Tantric teaching of the perfect Illusory Body, the teaching of the light-of-awakening-from sleep, the teachings for the time of the reversed processes, there are other ways of practice found in the commentaries of the great teachers, which I will now relate in this chapter. First the instruction on the Illusory Body practice; second, the instructions on the Light Yoga.