Al-'Ankabut 29:50

Waqaloo lawla onzila AAalayhi ayatunmin rabbihi qul innama al-ayatu AAinda Allahiwa-innama ana natheerun mubeen

But they say, "Why are not signs sent down to him from his Lord?" Say, "The signs are only with Allāh, and I am only a clear warner."

And they say, “Why is it that no signs (miracles) have been sent down to him from his Lord?” Say, “Signs are only with Allah, and I am only a plain warner.”