Kural - 165

Envy they have within! Enough to seat their fate!
Though foemen fail, envy can ruin consummate

Explanation
To those who cherish envy that is enough Though free from enemies that (envy) will bring destruction.

Tamil Transliteration
Azhukkaaru Utaiyaarkku Adhusaalum Onnaar
Vazhukka?yum Keteen Padhu.