فَمَا أَطْوَلَ لَيْلَ الْمُنْتَظِرِينَ، وَمَا أَقْصَرَهُ حِينَ تَصِلُ الْبُشْرَى!
How long the night seems to those who wait, and how short when good news comes!
Mā aṭwala and mā aqṣar are exclamatory patterns. Their contrast describes felt duration: anticipation stretches time, while relief changes the experience of that time. Nothing here claims a change in clock time.
The ending moves from reported events to their emotional effect. Meaning, order and rhetorical form converge instead of operating as disconnected ornaments.