Sahaja Samadhi (Skt. सहज समाधी, Sahaj Samadhi) means a Natural Balanced State.
It is a nondual state.
It is the recognition that I am in this state now.
There is no possibility of any other state. One is necessarily in the Sahaja Samadhi eternally.
Other states come and go on the background of this state. Since they come and go, or change, they are false.
Sahaja is our true state of being. However in an ordinary person, it is occluded by ignorance.
It is that which is right here right now.
It is unconditioned seeing, or remaining as a pure mind.
It is the nondual Experiencing or Oneness.