Interrogative forms are not restricted to obtaining new information. They can express wonder, impatience over delay, or warning against a misguided course. The grammatical question remains recognizable, but the intended conversational effect changes.
«مَا لِيَ لَا أَرَى الْهُدْهُدَ»
Why do I not see the hoopoe?
The expression conveys surprise. In a suitable context “kam daʿawtuka” (“How often I called you!”) can emphasize repeated calls rather than ask for a count. “Fa-ayna tadhhabūn” (“Where are you going?”) can warn against a wrong direction. First establish whether an actual quantity, location or cause is being sought, or whether the form performs a rhetorical act.