לֹֽא־יָמִ֞ישׁ עַמּ֤וּד הֶֽעָנָן֙ יוֹמָ֔ם וְעַמּ֥וּד הָאֵ֖שׁ לָ֑יְלָה לִפְנֵ֖י הָעָֽם׃ (פ)
the pillar of cloud by day, and the pillar of fire by night, departed not from before the people.
Read halakhic rulings (Jewish law) on Exodus 13:22: and classical halakhic sources.