The subject-matter of the self-Knowledge is Soul /Spirit, the only Reality. Deeper inquiry, analysis and reasoning on the true base, is the only tool to acquire Self-knowledge.
The transmigrating self is indeed ultimate reality. The one who knows the “Self “as “Soul”, which is beyond physicality becomes one with it. Through Self-Knowledge one becomes aware of the fact that the idea creator and creation is mere mirage.
The birth, life and death are mere mirage. By discovering the fact that, the true self is not physical but it is the spirit, and total negation of the physical existence holding the spirit as self, the formless nondual nature of Sprit, which is free from duality/diversity, can be gained.
The ultimate truth cannot be directly described by words because it is not and entity or identity within the waking or dream. It is the within the three states but it is without the three states because it is apart from the three states. It is within the three states as their formless substance and it is apart from the three states as their formless witness. Therefore, the substance and witness of the three states is one and the same.
The three states appear to be real, because of our ignorance of its real nature, to be limited by the body, the world. The limiting the mind to the physical entity is cause of experiencing the duality as reality
Because of the soul all the activities in the waking or dream takes place. The soul is main power behind the physical existence that is man along with his experience of the world.
From the point of view of absolute reality, since soul alone exists, it can have no association with the mind which appears and disappears as waking or dream.
The three states are unreal from the absolute point of view, just as an object experienced in dream cannot have any association with an object known in the waking experience. The world, form, time and space are reality within the waking and dream. The dream becomes unreal when waking takes place similarly the waking becomes unreal when the nondual wisdom dawns.
