I have heard this list discussed in Dharma talks like this one:
Gil Fronsdal: The Four Resolves (Recorded: Monday, June 12, 2017)
But when I tried to find suttas on this subject, I could only find 1 in which the existence of the "4 resolves" was mentioned.
DN 33: Saṅgāti Sutta
Bhikkhu, this person has four foundations.’ So it was said. And with reference to what was this said? There are the foundation of wisdom, the foundation of truth, the foundation of relinquishment, and the foundation of peace. So it was with reference to this that it was said: ‘Bhikkhu, this person has four foundations.’
'One should not neglect wisdom, should preserve truth, should cultivate relinquishment, and should train for peace.’ So it was said. And with reference to what was this said?
