The Mandukya Upanishad is the shortest amongst the principal UPANISHAD-S having just 12 mantra-s but presents the quintessence of our entire UPANISHADIK teaching.
It analyses the entire range of human consciousness in the three states of waking ( Jagrat ), dream ( Svapna ), and dreamless sleep ( Susupti ) which are common to all men, women, and children.
It asserts unequivocally that the Absolute Reality is non-dual ( Advaita ) and attributeless ( Nirguna ).
It has a unique method of approach to Truth.
It provides symbol for meditation in mono-syllable : AUM --- comprising of three sounds A, U, M, detailing its philosophical implications.
According to MUKTIKOPANISHAD, it forms the epitome of all the hundred and eight Upanishad-s which have been accepted as authentic.
To be continued ....