The Mandukya Upanishad
With an Advaita Commentary from our Understanding
29. As through Maya the mind in dream vibrates into the appearance of two (grahya and agrahaka), so through Maya the mind in the waking state vibrates into the appearance of two agrahva and grahaka.
That dreams present the same illusion of duality due as the waking state is known. Mind working and perceiving itself as a separate entity is the cause of the perception of duality.
Copyright: Kenneth Jaques Advaita Vedanta Philosophy Ashram. Original Content Creative Commons Attribution share-Alike Agreement.