Al-salam ´alaykum wa rahmatullah wa baarakatuh.
You can find here one of the Miracles of Noble Quran:
http://www.islamreligion.com/articles/562/BUT our enemy: answering-islam.com made a rebuttal to this
They wrote:
خَلَقَكُم مِّن نَّفۡسٍ۬ وَٲحِدَةٍ۬ ثُمَّ جَعَلَ مِنۡہَا زَوۡجَهَا وَأَنزَلَ لَكُم مِّنَ ٱلۡأَنۡعَـٰمِ ثَمَـٰنِيَةَ أَزۡوَٲجٍ۬ۚ يَخۡلُقُكُمۡ فِى بُطُونِ أُمَّهَـٰتِڪُمۡ خَلۡقً۬ا مِّنۢ بَعۡدِ خَلۡقٍ۬ فِى ظُلُمَـٰتٍ۬ ثَلَـٰثٍ۬ۚ ذَٲلِكُمُ ٱللَّهُ رَبُّكُمۡ لَهُ ٱلۡمُلۡكُۖ لَآ إِلَـٰهَ إِلَّا هُوَۖ فَأَنَّىٰ تُصۡرَفُونَ (٦) Quran 39:6
It say : anzala lakum
So they say that the cattles were also sent down just like the iron.APPENDIX
History testifies to the fact that other ancient cultures, e.g. the Egyptians, Sumerians and Hittites witnessed the fall of meteorites and revered them as heavenly gifts/sacred objects:
Throughout the ages, meteorites were venerated as sacred objects by different cultures and ancient civilizations. The spectacular fall of a meteorite, accompanied by light and sound phenomena, such as falling stars, smoke, thunder, and sonic booms, has always kindled the human imagination, evoking fear and awe in everyone who witnesses such an event. For obvious reasons, the remnants of these incidents, the actual meteorites, were often kept as sacred stones or objects of power. They were worshiped, and used in their respective religious ceremonies.8
More to the point, some of these meteorites naturally had iron in them and thus made some tribes aware of iron’s connection with the sky:
Actually, several Native American tribes venerated pieces and fragments of the Canyon Diablo meteorite, a giant iron meteorite that excavated Arizona's famous Meteor Crater upon its impact about 50,000 years ago. Archaeological finds throughout the United States and Mexico, proved that Canyon Diablo fragments had been traded briskly centuries before Columbus reached the shores of the New World.
The discovery of iron in the meteorites did not only make ancient civilizations aware of the fact that iron was “sent down†from the sky, but also taught them that these fallen stones were the best source of iron:
Iron meteorites provided iron for people to use for tools and weapons before the art of smelting was known. Finding such meteorites was rare and the ancients did understand the meteorites connection with sky. This was evidenced in the names given them. The ancient Egyptians called meteorites the "stone of heaven." The oldest Sumerian word for iron meant "sky" and "fire." The Hittites, one of the first to use weapons from smelted terrestrial iron, called the metal "fire from heaven." The Assyrians too, extracted iron from ore and called it "fragment from heaven."