Then Mahamati said to the Blessed One: You have spoken of an astral-body, a "mind-vision-body" (manomayakaya) which the Bodhisattvas are able to assume, as being one of the fruits of self-realization of Noble Wisdom: pray tell us, Blessed One, what is meant by such a transcendental body? The Blessed One replied: There are three kinds of such transcendental bodies: First, there is the one in which the Bodhisattva attains enjoyment of the Samadhis and Samapattis. Second, there is the one which is assumed by the Tathagatas according to the class of beings to be sustained, and which achieves and perfects spontaneously with no attachment and no effort. Third, there is the one in which the Tathagatas receive their intuition of Dharmakaya. The transcendental personality that enters into the enjoyment of the Samadhis comes with the third, fourth and fifth stages as the mentations of the mind-system become quieted and waves of consciousness are no more stirred on the face of Universal Mind. In this state, the conscious-mind is still aware, in a measure, of the bliss being experienced by this cessation of the mind's activities. The second kind of transcendental personality is the kind assumed by the Bodhisattvas and Tathagatas as bodies of transformation by which they demonstrate their original vows in the work of achieving and perfecting; it comes with the eighth stage of Bodhisattvahood. When the Bodhisattva has a thorough-going penetration into the maya-like nature of things and understands the dharma of imagelessness, he will experience the "turning-about" in his deepest consciousness and will become able to experience the higher Samadhis even to the highest. By entering into these exalted Samadhis he attains a personality that transcends the conscious-mind, by reason of which he obtains supernatural powers of self-mastery and activities because of which he is able to move as he wishes, as quickly as a dream changes, as quickly as an image changes in a mirror. This transcendental body is not a product of the elements and yet there is something in it that is analogous to what is so produced; it is furnished with all the differences appertaining to the world of form but without their limitations; possessed of this "mind-vision-body" he is able to be present in all the assemblages in all the Buddha-lands. Just as his thoughts move instantly and without hindrance over walls and rivers and trees and mountains, and just as in memory he recalls and visits the scenes of his past experiences, so, while his mind keeps functioning in the body, his thoughts may be a hundred thousand yojanas away. In the same fashion the transcendental personality that experiences the Samadhi Vajravimbopama will be endowed with supernatural powers and psychic faculties and self-mastery by reason of which he will be able to follow the noble paths that lead to the assemblages of the Buddhas, moving about as freely as he may wish. But his wishes will no longer be self-centered nor tainted by discrimination and attachment, for this transcendental personality is not his old body, but is the transcendental embodiment of his original vows of self-yielding in order to bring all beings to maturity. The third kind of transcendental personality is so ineffable that it is able to attain intuitions of the Dharmakaya, that is, it attains intuitions of the boundless and inscrutable cognition of Universal Mind. As Bodhisattva-Mahasattvas attain the highest of the stages and become conversant with all the treasures to be realized in Noble Wisdom, they will attain this inconceivable transformation-body which is the true nature of al the Tathagatas past, present and future, and will participate in the blissful peace which pervades the Dharma of all the Buddhas.

(The Lankavatara Sutra)