Akusalasutta
“Tīhi, bhikkhave, dhammehi samannāgato bālo veditabbo. Katamehi tīhi? Akusalena kāyakammena, akusalena vacīkammena, akusalena manokammena. Imehi kho, bhikkhave, tīhi dhammehi samannāgato bālo veditabbo.
Unskillful
“A fool is known by three things. What three? Unskillful deeds by way of body, speech, and mind. These are the three things by which a fool is known.