Kural - 186

Who on his neighbours' sins delights to dwell,
The story of his sins, culled out with care, the world will tell

Explanation
The character of the faults of that man who publishes abroad the faults of others will be sought out and published.

Tamil Transliteration
Piranpazhi Kooruvaan Thanpazhi Yullum
Thirandherindhu Koorap Patum.