Kural - 170

No envious men to large and full felicity attain;
No men from envy free have failed a sure increase to gain

Explanation
Never have the envious become great; never have those who are free from envy been without greatness.

Tamil Transliteration
Azhukkatru Akandraarum Illai Aqdhuillaar
Perukkaththil Theerndhaarum Il.