Why are “ila al-marafiq” and “ila al-layl” treated differently?

Particles of Meaning: Aw, Hatta, Ila, Ala, Fi and Ba

• Both are independent endpoints, so both must be excluded
• All limits after ila must be included, so both are included
• The elbow is part of the limb; night is a distinct terminal boundary
• One is an imperative and the other a statement, so the nature of the boundary is irrelevant