“But those who disbelieve—their works are like a mirage in a barren plain. A parched man thinks it is water; yet when he reaches it, he finds nothing there, and finds Allah beside him, Who settles his account in full. Allah is swift in reckoning.” (al-Nur 24:39)
“Or they are like layers of darkness in a deep, stormy sea, covered by waves upon waves, with clouds above them—darkness upon darkness: when he stretches out his hand, he can scarcely see it. For whoever Allah does not grant light, he will have no light at all.” (al-Nur 24:40)
Thus it is clear that they have no evidence supporting their position in anything Muhammad—may Allah bless him and grant him peace—has brought. Rather, what he has brought stands as conclusive proof against them from many angles.