Al-Ankabut - 29:50

وَقَالُوا لَوْلَا أُنزِلَ عَلَيْهِ آيَاتٌ مِّن رَّبِّهِ قُلْ إِنَّمَا الْآيَاتُ عِندَ اللَّهِ وَإِنَّمَا أَنَا نَذِيرٌ مُّبِينٌ
[29:50]
And they say: Why are not signs sent down upon him from his Lord? Say: The signs are only with Allah, and I am only a plain warner.
Ye they say: "Why are not Signs sent down to him from his Lord?" Say: "The signs are indeed with Allah: and I am indeed a clear Warner."
And they say: Why are not portents sent down upon him from his Lord? Say: Portents are with Allah only, and I am but a plain warner.