Thirukkural 145

எளிதென இல்லிறப்பான் எய்துமெஞ் ஞான்றும் விளியாது நிற்கும் பழி.

Elidhena illirappaan eydume njan ndum viliyadhu nirkum pazhi.

You may think shame easy to cast off, yet once earned it clings to you always, unwilling to depart.