Kural - 813

These are alike: the friends who ponder friendship's gain
Those who accept whate'er you give, and all the plundering train

Explanation
Friendship who calculate the profits (of their friendship), prostitutes who are bent on obtaining their gains, and thieves are (all) of the same character.

Tamil Transliteration
Uruvadhu Seerdhookkum Natpum Peruvadhu
Kolvaarum Kalvarum Ner.