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

Should a person commit evil,
let one not do it again and again.
Let one not find pleasure therein,
for painful is the accumulation of evil.

Dhammapada 9.117
The Dhammapada: The Buddha’s Path of Wisdom, translated from Pāli by Acharya Buddharakkhita