Kural - 815

'Tis better not to gain than gain the friendship profitless
Of men of little minds, who succour fails when dangers press

Explanation
It is far better to avoid that to contract the evil friendship of the base who cannot protect (their friends) even when appointed to do so.

Tamil Transliteration
Seydhemanj Chaaraach Chiriyavar Punkenmai
Eydhalin Eydhaamai Nandru.