שָׁמַ֣יִם לָ֭רוּם וָאָ֣רֶץ לָעֹ֑מֶק וְלֵ֥ב מְ֝לָכִ֗ים אֵ֣ין חֵֽקֶר׃
The heaven for height, and the earth for depth, and the heart of kings is unsearchable.
Read halakhic rulings (Jewish law) on Proverbs 25:3 from the Mishneh Torah and classical halakhic sources, free online.