8.
The Second Discourse on Ascetics and Brahmins
276.
"There are these three feelings, monks.
Which three?
Pleasant feeling, unpleasant feeling, neither-unpleasant-nor-pleasant feeling.
Whatever ascetics or brahmins, monks, who do not understand as it really is the origin, passing away, gratification, danger, and escape of these three feelings, etc.
They understand, etc.
Having realised by direct knowledge themselves, having attained, they dwell."
The eighth.