sn.22.114 Saṁyutta Nikāya (Linked Discourses)

Knowledge

At Sāvatthī.
Seated to one side, that mendicant said to the Buddha:
“Sir, they speak of this thing called ‘knowledge’.
What is knowledge?
And how is a knowledgeable person defined?”
“Mendicant, it’s when a learned noble disciple understands form, its origin, its cessation, and the practice that leads to its cessation.
They understand feeling …
perception …
choices …
consciousness, its origin, its cessation, and the practice that leads to its cessation.
This is called knowledge.
And this is how a knowledgeable person is defined.”