Kural - 135

The envious soul in life no rich increase of blessing gains,
So man of 'due decorum' void no dignity obtains

Explanation
Just as the envious man will be without wealth, so will the man of destitute of propriety of conduct be without greatness.

Tamil Transliteration
Azhukkaa Rutaiyaankan Aakkampondru Illai
Ozhukka Milaankan Uyarvu.