Quran 34:10 — Sheba (Saba')

We endowed David with blessings from us: "O mountains, submit with him, and you too, O birds." We softened the iron for him.

[34:9] Have they not seen all the things in front of them and behind them, in the heaven and the earth? If we willed, we could have caused the earth to swallow them, or caused masses to fall on them from the sky. This should be a sufficient proof for every obedient servant.

[34:11] "You may make shields that fit perfectly, and work righteousness. Whatever you do, I am Seer thereof."