1. (the hard ground of brahman)
The waking state minus the names and forms of the dreamstate equals existence, being, intelligence, consciousness, bliss, infinity, reality, atman, brahman.
(Brahman has no attributes nor an actual name. This is why neti neti. Even the invaluable pointer, satcitananda, is to be understood as not non-existent, not unintelligent, not of samsaric suffering.)
Sleep without dream is deep sleep reads the Mandukya. But the waking state minus the dream state equals turiya. Like attention minus thought equals awareness.
This difference between the dream state and the waking state is exactly that attention brought on by the shock of reality, like suddenly crashing into the substrate beneath the wings of dreams.
2. (the hard ground of atman)
Every morning, you awake but fall back into dreaming right away. Make divine imagination your morning devotion.
The mind has multiple dreams each night as the body consciousness rests. During the day, it has just one—consciousness is dream-consuming.
While it's being cloudy, have faith in the sky. And on a sunny savikalpa kind of day, I am the brahman sky.
Atman is always the knower and never the known. The knower is the self and the known is the not-self. Another name for this not-self is maya
3. (the holistic bliss infinity)
In the dreamstate, saguna brahman is the highest god Isvara. This divine imagination is devotion to nonduality. Brahman plus maya equals Isvara’s universe.
If nirguna brahman without atributes + maya = saguna brahman with attributes, then attributes r maya. For attributes are nothing but names and forms.
Names and forms (namarupa) are nothing but appearances (maya) in sat (existence-being-presence), cit (consciousness-intelligence-wisdom), and ananda (holistic-bliss-infinity).