What happens in Samadhi ...

WHAT HAPPENS IN SAMADHI AND HOW TO DIRECT IT TO THE ULTIMATE
TRUTH?
In seeking samadhi, you are trying to see the Truth through the absence of all activities,
because you do not see the Truth during the activities. But Truth (your svarupa)
is not to be found in either the presence or the absence of activities which constitute
the mental realm. Therefore, you must go beyond both, to get at the Truth.

The world ties you down by its presence here. The world ties you down by its absence
or non-existence in samadhi. You must transcend both, in order to reach the
Truth. It is beyond both activity and passivity. It is knowledge knowing everything
and knowledge not knowing anything, at the same time. It is simultaneously active
and passive; that is, you must transcend both to come to Truth.

You desire samadhi only for the happiness you suppose you derive from it, just as
you desire an object for the pleasure you hope to derive from it. Mandukya-karika
advises you to take away the desire from both and you will be in your own centre. But
it does not suggest how that desire can be taken away. It can only be done by knowing
that the happiness experienced in either case is not the outcome of either the samadhi
or the object, but that it is your own real nature and therefore intrinsic in you.

All effort to achieve one’s own real nature is meaningless; because it stands already
achieved. So the desire for the fruit vanishes, and you stand in the Reality.

........Shri Atmananda