At Savatthi. "Monks, I will teach you the phenomena to be comprehended, as well as comprehension. Listen & pay close attention. I will speak."
"As you say, lord," the monks responded.
The Blessed One said, "And which are the phenomena to be comprehended? Form is a phenomenon to be comprehended. Feeling ... Perception ... Fabrications ... Consciousness is a phenomenon to be comprehended. These are called phenomena to be comprehended.
"And which is comprehension? Any ending of passion, ending of aversion, ending of delusion. [1] This is called comprehension."
See also: SN 47.38.