Ninaiththe ozhiga nallaar theeviniayai
Sinaiththa seraar serum.
Good people should abandon evil even in thought — those who don't join those who have already done so (evil) and will suffer.
நல்லோர் தீவினையை நினைப்பிலேயே விடவேண்டும்; விடாதவர் தீவினையாளரோடு கூடி துன்படுவர்.
Abandon evil even at the thought stage — not just at the action stage. The virtuous must not even mentally entertain evil acts. This is the most demanding standard: thought-level ethics, not just action-level ethics.