It may be that a monk has been insane and suffering from psychosis. Because of that, he did and said many things unworthy of a monastic. The Sangha, several monks, or a single monk accuses him, saying, ‘Venerable, do you remember committing such-and-such an offense?’ Being insane, he acts insane, saying, ‘I do this, and so do you. This is allowable for me, and also for you.’ If the Sangha grants him resolution because of past insanity, then that granting is legitimate.”

4. Acting according to what has been admitted At one time the monks from the group of six did legal procedures—censure, demotion, banishment, reconciliation, and ejection—against other monks without their admission. The monks of few desires complained and criticized them, “How can the monks from the group of six do this?” They told the Buddha. … “Is it true, monks, that the monks from the group of six are doing this?” “It’s true, sir.” … After rebuking them … the Buddha gave a teaching and addressed the monks: “You shouldn’t do legal procedures—censure, demotion, banishment, reconciliation, or ejection—against monks without their admission. If you do, you commit an offense of wrong conduct.

And how’s acting according to what’s been admitted illegitimate?