Thirukkural 54

பெண்ணின் பெருந்தக்க யாவுள கற்பென்னும் திண்மைஉண் டாகப் பெறின்.

Pennil perunthakka yaavul karpennnum Tinmaiyun taaakap perin.

What is there of great worth in a woman? Only this: the strength that comes from chastity firmly held. When she possesses this solidity of character, nothing greater remains to be desired.