Surah Al Anbiya Tafseer

وَعَلَّمْنَاهُ صَنْعَةَ لَبُوسٍ لَّكُمْ لِتُحْصِنَكُم مِّن بَأْسِكُمْ

And We taught him the making of metal coats of mail, to protect you in your fighting.

meaning, the manufacture of chain-armor.

Qatadah said that before that, they used to wear plated armor; he was the first one to make rings of chain-armor.

This is like the Ayah:

وَأَلَنَّا لَهُ الْحَدِيدَأَنِ اعْمَلْ سَـبِغَـتٍ وَقَدِّرْ فِى السَّرْدِ

And We made the iron soft for him. Saying:"Make you perfect coats of mail, and balance well the rings of chain armor." (34:10-11),

meaning, do not make the pegs so loose that the rings (of chain mail) will shake, or make it so tight that they will not be able to move at all.

Allah says:

...

لِتُحْصِنَكُم مِّن بَأْسِكُمْ

to protect you in your fighting.

meaning, in your battles.

...

فَهَلْ أَنتُمْ شَاكِرُونَ

Are you then grateful. means,

`Allah blessed you when He inspired His servant Dawud and taught him that for your sake.'

The Power of Suleiman is unparalleled

And Allah tells: