AL-MATEEN-The Firm One The Steadfast

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The One with great firmness. He is the owner of all strength and His nature is the utmost firmness and steadfastness. He is the One who can easily overcome anything through supreme firmness and strength of determination. The One with extreme Power which is un-interrupted and He does not get tired.
Allah, Exalted be He, says, “Truly, Allah is the Lord of power, the All-strong.” (Surat Adh-Dhaariyyaat, 51:58).
He is the possessor of the ultimate strength and ability, and He endures neither hardship, nor weariness.

The One who is most steadfast and solid. The One whose strength produces certitude.

The One who is loyal, firm and constant. The One whose nature is the utmost firmness and steadfastness.

The One who can easily overcome anything through supreme firmness and strength of determination.

From the root m-t-n which has the following classical Arabic connotations:

to be strong, stout, firm, hard
to be solid, robust
to be steadfast, certain, sure
to possess any quality in a strong degree
the hard outer or apparent part of something
elevated and hard ground

This name is used in the Qur’ān. For example, see 51:58

Related names:

Qawī – Strong – the One who is all-mighty and possesses inexhaustible strength.

Matīn – Firm – the One whose nature it is to be firm, determined and steadfast.

Qahhār – Dominator – the One who dominates, conquers, overpowers

Muqtadir – Determiner – the One who uses supreme power to enforce whatever Divine wisdom decrees or decides.