وَلَا يَخْرُجُ الْمُعْتَكِفُ مِنَ الْمَسْجِدِ إِلَّا لِحَاجَةِ الْإِنْسَانِ
Translation: The one in retreat does not leave the mosque except for a human necessity.
Lā gives negation; yakhruju is an indicative imperfect verb; al-muʿtakif is its subject; min al-masjid indicates departure from the mosque; and illā introduces the exception.