Vitthatabalasutta 5.2

5.2

Idha, bhikkhave, ariyasāvako ottappī hoti, ottappati kāyaduccaritena vacīduccaritena manoduccaritena, ottappati pāpakānaṃ akusalānaṃ dhammānaṃ samāpattiyā.

It’s when a noble disciple is prudent. They’re prudent when it comes to bad conduct by way of body, speech, and mind, and prudent when it comes to the acquiring of any bad, unskillful qualities.