הֶֽחָכָם֙ עֵינָ֣יו בְּרֹאשׁ֔וֹ וְהַכְּסִ֖יל בַּחֹ֣שֶׁךְ הוֹלֵ֑ךְ וְיָדַ֣עְתִּי גַם־אָ֔נִי שֶׁמִּקְרֶ֥ה אֶחָ֖ד יִקְרֶ֥ה אֶת־כֻּלָּֽם׃
The wise man, his eyes are in his head; But the fool walketh in darkness. And I also perceived that one event happeneth to them all.
Read halakhic rulings (Jewish law) on Ecclesiastes 2:14: and classical halakhic sources.