Al-An'am 6:37

Waqaloo lawla nuzzila AAalayhiayatun min rabbihi qul inna Allaha qadirunAAala an yunazzila ayatan walakinnaaktharahum la yaAAlamoon

And they say, "Why has a sign not been sent down to him from his Lord?" Say, "Indeed, Allāh is Able to send down a sign, but most of them do not know."

They say, “Why is it that no sign (of our choice) has been sent down to him from his Lord?” Say, “Allah is surely powerful enough to send down a sign.” But most of them do not know.