sn.36.28 Saṁyutta Nikāya (Linked Discourses)

Ascetics and Brahmins (2nd)

“Mendicants, there are these three feelings.
What three?
Pleasant, painful, and neutral feeling.
There are ascetics and brahmins who don’t truly understand these three feelings’ origin, ending, gratification, drawback, and escape. …
There are ascetics and brahmins who do truly understand …”