Kural - 603

Who fosters indolence within his breast, the silly elf!
The house from which he springs shall perish ere himself

Explanation
The (lustre of the) family of the ignorant man, who acts under the influence of destructive laziness will perish, even before he is dead.

Tamil Transliteration
Matimatik Kontozhukum Pedhai Pirandha
Kutimatiyum Thanninum Mundhu.