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?"
Related:
The Cow/2:118
"The ignorant said, "Should not Allah have spoken to us or a sign (miracle) have come to us?"Those before them had spoken like them. Their minds are alike. We show the miracles to those who believe."
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."
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?"
The Night Journey/17:59
The fact that those before denied them did not prevent Us from sending signs. For example, We had clearly given the camel to Thamud. But they wronged him. We send the signs only as a warning.
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."