Surah Saba' (The Sheba), Verse 10

وَلَقَدْ اٰتَیْنَا دَاوٗدَ مِنَّا فَضْلًا یٰجِبَالُ اَوِّبِیْ مَعَهٗ وَالطَّیْرَ وَاَلَنَّا لَهُ الْحَدِیْدَ ۟

Wa laqad aatainaa Daawooda minnaa fadlany yaa jibaalu awwibee ma'ahoo wattaira wa alannaa lahul hadeed

“We bestowed Grace aforetime on David from ourselves: "O ye Mountains! Sing ye back the Praises of Allah with him! and ye birds (also)! And We made the iron soft for him;-”

Quran 34:10 (Yusuf Ali Translation)