The Prajnanam Brahma Dhyana Mantra is a contemplative formula centered on the Mahavakya (great saying) 'Prajnanam Brahma' (Consciousness is Brahman), which originates from the Aitareya Upanishad (3.3) of the Rigveda. This Upanishadic declaration asserts that pure consciousness (prajnana) is identical to the ultimate reality, Brahman. The mantra is used for meditation (dhyana) on this non-dual truth, guiding the practitioner to realize that the innermost self (Atman) is none other than Brahman. The term 'prajnanam' derives from the root 'jna' (to know) with the prefix 'pra', indicating supreme or reflexive knowledge; it signifies the self-luminous awareness that underlies all cognition.
In the Advaita Vedanta tradition, as expounded by Shankara in his commentary on the Aitareya Upanishad, this Mahavakya is a direct instruction for liberation (moksha). The mantra is often chanted with the syllable 'Om' prefixed, as in 'Om Prajnanam Brahma', to align the mind with the vibration of ultimate reality. According to the Mantra-Yoga-Samhita, such dhyana mantras purify the intellect and remove the veil of ignorance (avidya). The recommended practice involves silent repetition (japa) or mental contemplation during the brahma muhurta (pre-dawn hours), seated in a stable posture, with focus on the heart or crown chakra.
Traditionally, 108 repetitions are performed daily, or the mantra is recited continuously until realization dawns. The purpose is to dissolve the false identification with the body-mind complex and to abide in the natural state of pure awareness. No specific cautions are given, but the mantra is considered potent and should be approached with reverence and a qualified guru's guidance, as per the Shaktisangama Tantra, which warns that Mahavakyas are not for the unprepared. This mantra is not associated with any particular deity but with the formless Brahman, and it is chanted globally by seekers of non-dual wisdom.
Om. Consciousness is Brahman.