אוֹצָ֤ר ׀ נֶחְמָ֣ד וָ֭שֶׁמֶן בִּנְוֵ֣ה חָכָ֑ם וּכְסִ֖יל אָדָ֣ם יְבַלְּעֶֽנּוּ׃
There is desirable treasure and oil in the dwelling of the wise; But a foolish man swalloweth it up.
Read midrashic interpretation of Proverbs 21:20: and classical rabbinic exegesis.