As a disciple of the Buddha, I must not broadcast the misdeeds or infractions of Bodhisattva-clerics or Bodhisattva-laypersons, or of other monks and nuns, nor encourage others to do so. I must not create the causes, conditions, methods, or karma of discussing the offenses of the Sangha.
As the Buddha’s disciple, whenever I hear ill-intentioned persons, externalists, or followers of the Two Vehicles speak of practices contrary to the Dharma or contrary to the precepts within the Buddhist community, I should instruct them with a compassionate mind and lead them to develop wholesome faith in the Mahayana. If instead, I discuss the faults and misdeeds that occur within the Sangha, I commit a major offense.
—Brahma Net Sutra, Bodhisattva Vows