Kural - 221

Call that a gift to needy men thou dost dispense,
All else is void of good, seeking for recompense

Explanation
To give to the destitute is true charity All other gifts have the nature of (what is done for) a measured return.

Tamil Transliteration
Variyaarkkondru Eevadhe Eekaimar Rellaam
Kuriyedhirppai Neera Thutaiththu.