Kural - 311

Though ill to neighbour wrought should glorious pride of wealth secure,
No ill to do is fixed decree of men in spirit pure

Explanation
It is the determination of the spotless not to cause sorrow to others, although they could (by so causing) obtain the wealth which confers greatness.

Tamil Transliteration
Sirappeenum Selvam Perinum Pirarkku Innaa
Seyyaamai Maasatraar Kol.