Kural - 938

Gambling wastes wealth, to falsehood bends the soul: it drives away
All grace, and leaves the man to utter misery a prey

Explanation
Gambling destroys property, teaches falsehood, puts an end to benevolence, and brings in misery (here and hereafter).

Tamil Transliteration
Porul Ketuththup Poimer Koleei Arulketuththu
Allal Uzhappikkum Soodhu.