Kural - 144

How great soe'er they be, what gain have they of life,
Who, not a whit reflecting, seek a neighbour's wife

Explanation
However great one may be, what does it avail if, without at all considering his guilt, he goes unto the wife of another ?.

Tamil Transliteration
Enaiththunaiyar Aayinum Ennaam Thinaiththunaiyum
Theraan Piranil Pukal.