Bojjhaṅgasutta
“Cattārimāni, bhikkhave, kammāni …pe… kaṇhaṁ kaṇhavipākaṁ …pe… idha, bhikkhave, ekacco sabyābajjhaṁ kāyasaṅkhāraṁ abhisaṅkharoti …pe… idaṁ vuccati, bhikkhave, kammaṁ kaṇhaṁ kaṇhavipākaṁ.
Awakening Factors
“Mendicants, I declare these four kinds of deeds, having realized them with my own insight. … And what are dark deeds with dark results? It’s when someone makes hurtful choices by way of body, speech, and mind. These are called dark deeds with dark results.