Mind is not within the physical body but body and the world are within the mind

'I' is in the form of mind. Mind is not within the physical body but body and the world are within the mind.  Mind is in the form of universe. Universe appears as waking or dream and disappears as deep sleep.  The one which is aware of the waking or dream is neither the waking entity nor the dream entity but the soul, which is in the form of formless   consciousness, which is the innermost self.

 There was nothing, not even a trace of mind or universe prior to the appearance of the waking experience.  The waking experience is parallel dream and dream is parallel waking experience. The witness of the three states is not the waking entity or ego but the soul or consciousness.  Waking entity becomes aware of the dream and deep sleep experiences only in waking experience.  The waking experience is states of ignorance because the waking entity is unaware of the fact that it itself is not self.  Only when it starts investigating about its true existence it becomes aware of the fact that the self is neither the body nor the ego but the formless consciousness, which pervades in everything and everywhere in all the three states.