Toh 412The Tantra of the Meaning of the Essential Nature of the Mind

Commentary on the Cittagarbhārthatantra Sutra

Context

The Cittagarbhārthatantra (The Sutra on the Essential Meaning of the Mind) is an important tantric scripture in the Vajrayana tradition, composed during the later development of Indian Buddhism. This sutra belongs to the Kangyur, especially the Tantras section, where the most profound tantric teachings are gathered.

The historical context of the sutra is related to the development of Tibetan Tantra, where enlightened masters transmitted methods of practice for swiftly attaining Buddhahood. This sutra particularly emphasizes the nature of mind, the core factor from which all phenomena arise. In Tantra, clearly recognizing the nature of mind is not a theoretical subject, but a direct experience that must be cultivated through methodical practice.

Main Content

This sutra focuses on the basic principle that mind (citta) is not matter, not empty space, but a clear and knowing luminosity (prabhāsvara-jñāna). This is one of the essential aspects of Tantra: the understanding that the nature of mind is already Buddha, requiring no construction or alteration.

According to the Vajrayana tantric tradition, especially in the levels of Yoga Tantra and Highest Yoga Tantra, this nature of mind is called “garbha” (womb, treasury), the place containing all potentials for awakening. The sutra teaches that the tathatā (suchness) of mind is unborn, unceasing, and undefiled.

The specific teachings in the sutra include methods for directly recognizing this nature through meditation (dhyāna) and special esoteric methods. The sutra does not only speak of theory, but also provides practical instructions for observing mind in itself, beyond the distinction between “the observer” and “the object observed.” This is the essence of inner yoga (āndara-yoga) in Tantra.