בְּכָל־עֶ֭צֶב יִהְיֶ֣ה מוֹתָ֑ר וּדְבַר־שְׂ֝פָתַ֗יִם אַךְ־לְמַחְסֽוֹר׃
En toda labor hay fruto: Mas la palabra de los labios solamente empobrece.
Rashi on Proverbs
In every toil In every toil of work, there is a gain, but in words of vanity, there is only loss.