Kural - 606

Though lords of earth unearned possessions gain,
The slothful ones no yield of good obtain

Explanation
It is a rare thing for the idle, even when possessed of the riches of kings who ruled over the whole earth, to derive any great benefit from it.

Tamil Transliteration
Patiyutaiyaar Patramaindhak Kannum Matiyutaiyaar
Maanpayan Eydhal Aridhu.