Sura Sabaʾ 34:10

وَلَقَدْ ءَاتَيْنَا دَاوُۥدَ مِنَّا فَضْلًا يَٰجِبَالُ أَوِّبِى مَعَهُۥ وَٱلطَّيْرَ وَأَلَنَّا لَهُ ٱلْحَدِيدَ

wa-la-qad ātaynā dāwuda minnā faḍlan yājibālu awwibī maʿahu wa-l-ṭayra wa-alannā lahu l-ḥadīda

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;-