At Paṅkadhā 4.4

4.4

Vuddhihesā, kassapa, ariyassa vinaye yo accayaṃ accayato disvā yathādhammaṃ paṭikaroti, āyatiṃ saṃvaraṃ āpajjati.

For it is growth in the training of the Noble One to recognize a mistake for what it is, deal with it properly, and commit to restraint in the future.