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Surah 34. Saba
Ayah 10 - 11
10وَلَقَدْ ءَاتَيْنَا دَاوُۥدَ مِنَّا فَضْلًا ۖ يَـٰجِبَالُ أَوِّبِى مَعَهُۥ وَٱلطَّيْرَ ۖ وَأَلَنَّا لَهُ ٱلْحَدِيدَ
11أَنِ ٱعْمَلْ سَـٰبِغَـٰتٍ وَقَدِّرْ فِى ٱلسَّرْدِ ۖ وَٱعْمَلُوا۟ صَـٰلِحًا ۖ إِنِّى بِمَا تَعْمَلُونَ بَصِيرٌ
[10-11] We had blessed David with a great bounty from Ourself.14 (We commanded:) "O mountains, join with him in glorification," and (the same Command We gave to) the birds.15 We made iron soft for him, saying, "Make coats of mail and set the rings in proper measure."16 (O people of David,) "Do good works: surely I see whatever you do."
14This is an allusion to the countless favors with which Allah had blessed the Prophet David. He was an ordinary young man of the tribe of Judah, living at Bethlehem. In a campaign against the Philistines he slew the giant Goliath, the great enemy of Israel, and suddenly grew in esteem of the Israelites. With this event began his rise to prominence; so much so that after the death of Saul he was first elected king of Judah in Hebron (mod. AI-Khalid, and then a few years later he was made king over all the tribes of Israel. He took Jerusalem and made it the capital of the kingdom of Israel. It was under his leadership that for the first time in history a God-worshiping kingdom was established, whose boundaries extended from the Gulf of `Aqabah to the western banks of the River Euphrates. In addition to these favors, he was further graced with Divine bounties in the form of knowledge and wisdom, and the qualities of justice and mercy and devotion to the truth. (For details, see E.N. 273 of Al-Baqarah and E.N. 7 of Bani Isra'il).
15For this please refer to AI-Anbiya': 79 and E.N. 71 thereof.
16For this also please refer to AI-Anbiya': 80 and E.N. 72 thereof.