He who does everything with proper balance and harmony.
“We shall set up scales of justice for the Day of Judgment, so that NOT A SOUL WILL BE DEALT WITH UNJUSTLY IN THE LEAST. And if there be (no more than) the weight of a mustard seed, We will bring it (to account): and enough are We to take account.”
(21:47)The Holy Quran

From the root q-s-t with the classical Arabic connotations: to act justly, equitably to do away with injustice to establish an equitable balance.
Allah is most equitable and just. The One whose ways are balanced and just.
He establishes justice. The One who creates harmony and balance.
He does away with injustice. The One who leads mankind to justice and harmony.
