“Hal ḥaḍara l-muʿallim?” normally asks for information about the teacher's arrival; a yes-or-no answer is expected.
«أَلَيْسَ اللَّهُ بِأَحْكَمِ الْحَاكِمِينَ»
Is not God the wisest of judges?
This is not a neutral request for an unknown fact. Its interrogative form directs the listener toward acknowledging an established truth. Before calling a question negative, confirmatory, or exclamatory, ask whether it truly seeks information or presses the addressee toward recognition.