Dukkathāsutta
“Pañcannaṁ, bhikkhave, puggalānaṁ kathā dukkathā puggale puggalaṁ upanidhāya. Katamesaṁ pañcannaṁ? Assaddhassa, bhikkhave, saddhākathā dukkathā; dussīlassa sīlakathā dukkathā; appassutassa bāhusaccakathā dukkathā; maccharissa cāgakathā dukkathā; duppaññassa paññākathā dukkathā.
Inappropriate Talk
“Mendicants, it is inappropriate to speak to five individuals by comparing that individual with someone else. What five? It’s inappropriate to talk to an unfaithful person about faith. It’s inappropriate to talk to an unethical person about ethics. It’s inappropriate to talk to an unlearned person about learning. It’s inappropriate to talk to a stingy person about generosity. It’s inappropriate to talk to a witless person about wisdom.