The Long Āgama Sūtra 24.9

24.9

佛復告堅固：「我終不教諸比丘為婆羅門、長者、居士而現神足上人法也。我但教弟子於空閑處靜默思道，若有功德，當自覆藏，若有過失，當自發露。」

The Buddha again told Dhruva, “I never instruct the monks to show the superhuman state with a display of miraculous abilities. I simply teach my disciples to peacefully contemplate the path in an empty and quiet place. If they have virtues, they should keep them to themselves. If they have defects, they should disclose them.”