Kural - 882

Dread not the foes that as drawn swords appear;
Friendship of foes, who seem like kinsmen, fear

Explanation
Fear not foes (who say they would cut) like a sword; (but) fear the friendship of foes (who seemingly.

Tamil Transliteration
Vaalpola Pakaivarai Anjarka Anjuka
Kelpol Pakaivar Thotarpu.