Dhammapada · 9.2

Pāpañce puriso kayirā, na taṃ kayirā punappunaṃ;Na tamhi chandaṃ kayirātha, dukkho pāpassa uccayo.

Papance puriso kayira, na tam kayira punappunam; Na tamhi chandam kayiratha, dukkho papassa uccayo.

If a person does evil, let them not do it again and again, nor take delight in it. Painful is the accumulation of evil.

— Dhammapada 9.2

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.