Deep Sleep Mind — Causal Body Mind

The Deep Sleep Mind, or Prajna, corresponds to the Sushupti state and the Anandamaya Kosha (the sheath of bliss). This is the level of the Causal Body (Karana Sharira), so named because it contains the seeds (Bijayas) of all future actions and incarnations. In deep sleep, the mind is folded back into a state of undifferentiated potentiality; there are no objects, no dreams, and no ego-identity. It is a state of profound peace and homogenization, yet it is characterized by a 'luminous ignorance' because the individual is generally unaware of the experience until they wake up and realize they 'slept well.' The operation of the Deep Sleep Mind is one of total rest and re-absorption into the causal matrix. Distortions at this level manifest as a 'tamasic' heaviness, where sleep does not result in refreshment but in a state of dullness and inertia. This occurs when the causal seeds are heavy with unresolved karma, preventing the soul from touching the true bliss of the Atman. To purify the Causal Body, one must engage in deep meditation (Dhyana) and the study of scripture (Svadhyaya) to burn the 'seeds' of karma through the fire of knowledge (Jnana-Agni). The practice of Turiya—the 'Fourth' state—involves bringing awareness into the gap between thoughts and the gap between waking, dreaming, and deep sleep. To transcend the Deep Sleep Mind is to enter the state of Samadhi, where the bliss of the causal body is experienced consciously rather than unconsciously. In this transcendence, the practitioner realizes that they are the eternal light that illuminates even the darkness of deep sleep, moving beyond the cycle of birth and death (Samsara) by exhausting the causal seeds that drive reincarnation.