If the self is not the waking entity than one has to investigate 'what is self?' in order to know the truth of his true existence

The individual experiences within the world are within the waking or dream. The soul, which is in the form of consciousness, is the witness of the mind, which is in the form of universe and universe appears as waking or dream. Thus the mind is mere mirage created out of the consciousness.  On the standpoint of the consciousness, the three states are mere mirage. The substance and witness of the mirage is real and eternal. 

Thus the onus is on person who dispute, has to prove that the burden of the three states is on the individual physical entity.

The question based on the waking  entity (ego) is of no use. Therefore, one has to make sure of the fact that, whether 'I', is the physical entity or 'I, is something other than the waking  entity.  If the self is not the waking  entity than one has to investigate  'what is self?'  in order  to know the truth of his true existence. --FORMLESS PATH