At Varanasi.
“Reverend Sāriputta, they speak of this thing called ‘knowledge’.
What is knowledge?
And how is a knowledgeable person defined?”
“Reverend, a learned noble disciple truly understands the gratification, the drawback, and the escape when it comes to form,
feeling,
perception,
choices,
and consciousness.
This is called knowledge.
And this is how a knowledgeable person is defined.”