כַּחֹ֤מֶץ ׀ לַשִּׁנַּ֗יִם וְכֶעָשָׁ֥ן לָעֵינָ֑יִם כֵּ֥ן הֶ֝עָצֵ֗ל לְשֹׁלְחָֽיו׃
As vinegar to the teeth, and as smoke to the eyes, So is the sluggard to them that send him.
Read halakhic rulings (Jewish law) on Proverbs 10:26: and classical halakhic sources.