שֵׁ֣בֶט וְ֭תוֹכַחַת יִתֵּ֣ן חָכְמָ֑ה וְנַ֥עַר מְ֝שֻׁלָּ֗ח מֵבִ֥ישׁ אִמּֽוֹ׃
The rod and reproof give wisdom; But a child left to himself causeth shame to his mother.
Read halakhic rulings (Jewish law) on Proverbs 29:15: and classical halakhic sources.