Iron : The Ultimate Matter

Metal

We have already sent Our messengers with clear evidences and sent down with them the Scripture and the balance that the people may maintain [their affairs] in justice. And We sent down iron, wherein is great military might and benefits for the people, and so that Allah may make evident those who support Him and His messengers unseen. Indeed, Allah is Powerful and Exalted in Might
(Quran-al-Hadid 57:25)

Note: the chapter number for al-Hadid is 57. there is 114 chapters in the quran. making AL Hadid the core center of the quran. the Earth's core is also made of iron.

The Mystery of Iron