增壹阿含經 50.8.p26

50.8.p26

“If this monk corrects his violation, that’s good. If he doesn’t correct his behavior, then he should be admonished in this way three times. If then he corrects himself, that’s good. Supposing he doesn’t correct himself, he is fallen. If a monk again conceals his affairs and isn’t open about them, them such a person is fallen. This, monks, is my ruling.”