This is the overall content of the Chanthokya Upanishad (chapters 7 & 8)
Pure consciousness exists in everything and within each of us, and it remains unique without any identification forever as well.
The Chandogya Upanishad elaborately explains this pure consciousness, and Thirumoolar has provided us with an effortless practice in his Thirumantram.
“Consciousness that clinches the body is a mantra.” -Thirumantram
When a person wakes up from deep sleep, they should first attempt to understand their existence as “pure consciousness,” which has unknowingly manifested in their profound sleep. Therefore, upon awakening, one should first recognize their existence as “pure consciousness,” a sense of consciousness that clenches the body like a mantra, clings to itself, and commands in subsequent moments, leading to the absence of individual egoism, individuality by name and form, and likes and dislikes.
What if, upon awakening, one wishes to become known by “being”?
Even when sleep comes, if you sleep with only that sense of “being” (as with pure consciousness), then that pure consciousness will naturally continue to manifest itself in dreams, sleep, and then in wakefulness in an effortless manner.
According to the practice of Ramana Maharishi, “Persist in the inquiry throughout your waking hours as pure consciousness.” That would be enough. If you keep making the query until you fall asleep, it will continue during your dreams and sleep. As soon as you wake up, resume your quest into pure consciousness.”
In the Bhagavad Gita, Chapter 6:17, Sri Krishna also advised, “For him who is moderate in food and recreation, moderate in exertion in all actions, and ceaseless inquiry in sleep and wakefulness, yoga destroys all pain and suffering (caused by birth and death).”
Sri gurubhyo namaha🙏🏿
Aadesh 