Kural - 969

Like the wild ox that, of its tuft bereft, will pine away,
Are those who, of their honour shorn, will quit the light of day

Explanation
Those who give up (their) life when (their) honour is at stake are like the yark which kills itself at the loss of (even one of) its hairs.

Tamil Transliteration
Mayirneeppin Vaazhaak Kavarimaa Annaar
Uyirneeppar Maanam Varin.