The Cattle - 6:109
"They swear by Allah with all their might that if a miracle came to them they would surely believe in it. Say: "The miracles are with Allah."Do you not know that they will not believe even when a miracle comes?"
What was the miracle given to Prophet Muhammad?
The Spider/29:50
"They said, "Should not a miracle have descended to him from your Lord?"Say, "Miracles are with Allah. I am only a clear warner."
The Spider/29:51
Is it not enough for them that We have sent down this Book to you and it has been read to them? In that is a mercy and an admonition for a people who believe.