Kural - 827

To pliant speech from hostile lips give thou no ear;
'Tis pliant bow that show the deadly peril near

Explanation
Since the bending of the bow bespeaks evil, one should not accept (as good) the humiliating speeches of one's foes.

Tamil Transliteration
Solvanakkam Onnaarkan Kollarka Vilvanakkam
Theengu Kuriththamai Yaan.