Your prophet wouldn't produce a "miracle" simply because he couldn't. There is nothing mystical or supernatural about "miracles". Things happen in the universe and most of the time we can explain it. If we can't explain it, it is because we haven't studied it enough. There is no sensible reason to take it for granted that we should think some spook made it happen. That's just pure superstition.[/left]
What haughty you are; and you insist on falsehood.
God gave to many prophets before Mohammed, many miracles; but they denied them and said all this is only some sort of magic and illusion; and that caused their destruction according to their denial.
This is in the Quran
17: 59
وَمَا مَنَعَنَا أَن نُّرْسِلَ بِالآيَاتِ إِلاَّ أَن كَذَّبَ بِهَا الأَوَّلُونَ وَآتَيْنَا ثَمُودَ النَّاقَةَ مُبْصِرَةً فَظَلَمُواْ بِهَا وَمَا نُرْسِلُ بِالآيَاتِ إِلاَّ تَخْوِيفًا
The explanation:
(Nothing prevents Us from sending [the messengers] with miracles but that the ancients denied the [miracles],
and We even gave [to the tribe of] Thamood the she-camel: an obvious [miracle], but they wronged [themselves] by [killing] it.
And We do not send [messengers] with miracles, except to frighten [that nation: as did We send Moses with the staff to Pharaoh and his people.])
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>> (Nothing prevents Us from sending [the messengers] with miracles but that the ancients denied the [miracles])
It means: nothing prevents Us from giving to Mohammed any objective miracle, other than the Quran; but only because the ancient denied such miracles and said this is only a sort of magic;
so if We give you, Mohammed, an objective miracle then your people will also deny, which will require their destruction according to their denial;
but better than all this is to wrangle with them and explain to them, and God will guide whoever of them deserving the guidance without any miracle.
See more about the miracles of the prophets, here: