Kural - 150

Though virtue's bounds he pass, and evil deeds hath wrought;
At least, 'tis good if neighbour's wife he covet not

Explanation
Though a man perform no virtuous deeds and commit (every) vice, it will be well if he desire not the womanhood of her who is within the limit (of the house) of another.

Tamil Transliteration
Aranvaraiyaan Alla Seyinum Piranvaraiyaal
Penmai Nayavaamai Nandru.