[erroxiainsona]

'perception' is the forming of concepts

perception perceives

sankhara (citta) forms concepts

kind regards

And why do you call it 'perception'? Because it perceives, thus it is called 'perception.' What does it perceive? It perceives blue, it perceives yellow, it perceives red, it perceives white. Because it perceives, it is called perception.

And why do you call it 'fabricating' ('sankhara')? Because it fabricates fabricated things, thus it is called 'fabricating.' What does it fabricate as a fabricated thing? For the sake of form-ness, it fabricates form as a fabricated thing. For the sake of feeling-ness, it fabricates feeling as a fabricated thing. For the sake of perception-hood... For the sake of fabrication-hood... For the sake of consciousness-hood, it fabricates consciousness as a fabricated thing. Because it fabricates fabricated things, it is called fabricating/fabricator.

Khajjaniya Sutta