Dhammapada · 10.8

Atha pāpāni kammāni, karaṃ bālo na bujjhati;Sehi kammehi dummedho, aggidaḍḍhova tappati.

Atha papani kammani, karam balo na bujjhati; Sehi kammehi dummedho, aggidaddhova tappati.

When the fool does evil deeds, he does not understand; by his own deeds, the dull-witted burns as if scorched by fire.

— Dhammapada 10.8

Source: Pali text from the Khuddaka Nikāya of the Pali Canon (oldest extant Buddhist scripture, compiled c. 3rd century BCE). Public-domain English readings drawn from F. Max Müller's translation in Sacred Books of the East, Vol X (1881) and the Buddhist Publication Society's freely-licensed Acharya Buddharakkhita rendering.