Kural - 839

Friendship of fools is very pleasant thing,
Parting with them will leave behind no sting

Explanation
The friendship between fools is exceedingly delightful (to each other): for at parting there will be.

Tamil Transliteration
Peridhinidhu Pedhaiyaar Kenmai Pirivinkan
Peezhai Tharuvadhon Ril.