Kural - 693

Who would walk warily, let him of greater faults beware;
To clear suspicions once aroused is an achievement rare

Explanation
Ministers who would save themselves should avoid (the commission of) serious errors for if the king's suspicion is once roused, no one can remove it.

Tamil Transliteration
Potrin Ariyavai Potral Katuththapin
Thetrudhal Yaarkkum Aridhu.