כִּֽי־נָ֭עִים כִּֽי־תִשְׁמְרֵ֣ם בְּבִטְנֶ֑ךָ יִכֹּ֥נוּ יַ֝חְדָּ֗ו עַל־שְׂפָתֶֽיךָ׃
For it is a pleasant thing if thou keep them within thee; Let them be established altogether upon thy lips.
Read halakhic rulings (Jewish law) on Proverbs 22:18: and classical halakhic sources.