Quran 57:24 — Iron (Al-Hadeed)

They are stingy, and enjoin the people to be stingy. If one turns away, then GOD is the Rich, the Praiseworthy.

[57:23] Thus, you should not grieve over anything you miss, nor be proud of anything He has bestowed upon you. GOD does not love those who are boastful, proud.

[57:25] We sent our messengers supported by clear proofs, and we sent down to them the scripture and the law, that the people may uphold justice. And we sent down the iron, wherein there is strength, and many benefits for the people. All this in order for GOD to distinguish those who would support Him and His messengers, on faith. GOD is Powerful, Almighty.