I have a few questions on the concept and origin of the term akhaNDAkAra vRRitti. Will be grateful for any contribution and thoughts on my dobuts.

1.  Does the term “akhaNDAkAra vRRitti” appear in any major upanishads or Bhagavad-Gita? If so, where (citation)?

2.  Where and by whom was the term “akhaNDAkAra vRRitti” introduced for the first time in Advaita?

3.  Is the concept “akhaNDAkAra vRRitti” an attempt to extend the process of ‘Object cognition’ by the mind as explained in Vedanta Paribhasha to the stage of Self-realization?

4.  Does it occur prior to (and hence causal to) Self-realization or is the term “akhaNDAkAra vRRitti” a post hoc  explanation of  a presumed process that might have occurred in the mind on Self-realization?

5.  Does the term have a practical utility for a seeker as a sAdhana tool? If so how?

Thanks and regards,