Mandukya Upanishad
With an Advaita Commentary from our Understanding
by Kenneth Jaques | 31,733 words
The Mandukya Upanishad is a short, just twelve verses, description of the material manifestation and the eventual return to unmanifest form of the Universe....
Verse 50
50. They do not get out from the firebrand, owing to their connection with the absence of the nature of a substance that is, owing to their not being a substance; they would be just like that in respect of the vijnana (consciousness) also, on account of the non-difference in appearance that is, appearances as such are the same by nature.
It is being explained that they do not get out or come from the firebrand because they are not in fact a substance in nature.
This lack of substance of the appearance of fire patterns is being similarly identified with consciousness which also is a lack of substance.