Kural - 500

The jackal slays, in miry paths of foot-betraying fen,
The elephant of fearless eye and tusks transfixing armed men

Explanation
A fox can kill a fearless, warrior-faced elephant, if it go into mud in which its legs sink down.

Tamil Transliteration
Kaalaazh Kalaril Nariyatum Kannanjaa
Velaal Mukaththa Kaliru.