Following carefully the teaching of the Five Steps, the instructions are given [by the guru]. A comprehensive survey of the pith-instruction is thus afforded, and the incompleteness of the Illusory-Body teaching of the Marpa School is also discussed fully.
Again, there are instructions such as given here: the teaching of the Two-in-One-with-Learning, the teaching of the Two-in-One-without-Learning, the principle of the four steps: Manifestation, Augmentation, Attainment and Great Light. Especially, the instructions on the following steps are given: How the illusory body is transformed from the mind-prana; how one can enter into the Absolute Light after making the Illusory Body; in what manner the Manifestation, Augmentation, Voidness, etc., come in sight; how the Two-in-One-with-Learning[r_nar:76] (Body) is transformed after the Absolute-Light is stabilized and how through it the Two-in-One-without-Learning Body can be established how, if the Yogi practices the Light-of-Sleep, he is able to make the prana enter into the Central Channel during the awakening state; then how the four Voids will successively appear as light through his capability of gathering the prana of Roma and Rkyang-ma in the Heart Center (after the light state); and how the Illusory Body of Buddha will appear in the dream--in this stage, even if the Illusory Body of Buddha does not appear in the dream, the yogi will have no doubt.
Through the power of the prana's entrance into the Central Channel, one is able to hold the light of sleep;
or, if one has attained the general Samadhis of Mahayana or Hinayana, one can also apply his Samadhi's power in the sleeping state. Thus, the deep-sleep-Samadhi state can be brought into the weaker-sleeping-state Samadhi. There is no clear explanation here on the differences of these various experiences though the various approaches. Therefore, one should carefully discriminate between the holding-of-dream through prana power and the holding-of-dream through desire; and between the coming of death-light and sleep-light through the prana power and through the power of the strong will. How the Sambhogakaya is manifested in the Bardo state should also be studied. If one wants to know this in detail, one may study the instructions of who provides much information.
In the practice of holding the Light-of-Sleep and the practice of holding the dream state, though the power of prana, the first step is to grasp the Light-of-Sleep and then manipulate the dream state.
If one is not able to gather the prana into the Central Channel, but with a very strong will or intention sets one's mind upon the recognizing of the dream state during the awakening time, throughout exertion of will power a Samadhi of sleeping state will arise. However, this cannot be called a decisive or actual Light-of-Sleep state.