Quran 57:7 — Iron (Al-Hadeed)

ءامِنوا بِاللَّهِ وَرَسولِهِ وَأَنفِقوا مِمّا جَعَلَكُم مُستَخلَفينَ فيهِ ۖ فَالَّذينَ ءامَنوا مِنكُم وَأَنفَقوا لَهُم أَجرٌ كَبيرٌ

Believe in GOD and His messenger, and give from what He has bestowed upon you. Those among you who believe and give (to charity) have deserved a great recompense.

[57:6] He merges the night into the day, and merges the day into the night. He is fully aware of the innermost thoughts.

[57:8] Why should you not believe in GOD when the messenger is inviting you to believe in your Lord? He has taken a pledge from you, if you are believers.