Kural - 164

The wise through envy break not virtue's laws,
Knowing ill-deeds of foul disgrace the cause

Explanation
(The wise) knowing the misery that comes from transgression will not through envy commit unrighteous deeds.

Tamil Transliteration
Azhukkaatrin Allavai Seyyaar Izhukkaatrin
Edham Patupaakku Arindhu.