The Cattle - 6:37
"They say: "Should not a sign (miracle) have descended on him from your Lord!"Say: "Allah can send down a sign whenever He wills, but most of them do not know it."
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.