3.
The Discourse on Ingratitude
223.
"Monks, a foolish, inexperienced bad person endowed with four qualities maintains himself injured and damaged, is blameable and censurable by the wise, and generates much demerit.
With which four?
Bodily misconduct, verbal misconduct, mental misconduct, ingratitude and unthankfulness -
these... etc.
A wise person...
Bodily good conduct, verbal good conduct, mental good conduct, gratitude and thankfulness... etc.
The third.