Kural - 703

Who by the sign the signs interprets plain,
Give any member up his aid to gain

Explanation
The king should ever give whatever (is asked) of his belongings and secure him who, by the indications (of his own mind) is able to read those of another.

Tamil Transliteration
Kurippir Kurippunar Vaarai Uruppinul
Yaadhu Kotuththum Kolal.