Kural - 788

As hand of him whose vesture slips away,
Friendship at once the coming grief will stay

Explanation
(True) friendship hastens to the rescue of the afflicted (as readily) as the hand of one whose garment is loosened (before an assembly).

Tamil Transliteration
Utukkai Izhandhavan Kaipola Aange
Itukkan Kalaivadhaam Natpu.