Kural - 921

Who love the palm's intoxicating juice, each day,
No rev'rence they command, their glory fades away

Explanation
Those who always thirst after drink will neither inspire fear (in others) nor retain the light (of their fame).

Tamil Transliteration
Utkap Pataaar Oliyizhappar Egngnaandrum
Katkaadhal Kontozhuku Vaar.