On Iqbal's Balance and Tuning

I think I was in 11th grade when we read Iqbal's famous poem: "har lehza hai..". One of its couplet (shyr) though I understood the literal meaning conceptually was beyond me.

Qahhariyo  gaffariyo  quddusiyo   jabroot
ye char anasir hon to banta hai muslman

I was confused that what to make of these four qualities in terms of a character.

I referred to our teacher Sir Anees. He was himself an Urdu poet and a well-read person. His explanation was different and I have not found anywhere else but made sense. According to him, this whole poem of Iqbal is about "balance" and "tuning" as he later said in the same poem:

Qudrat   ke    maqasid     ka    ayyar    is    ke    iraade
Duniya main bhi meezan, Qayamat main bhi  meezan

Hamsaaye       jibreele      ameeN     bandaye     khaki
hai     is  ka    nasheman   na bukhara  na badkhshan

 In old mythologies, it was said that the universe is created from four basic anaseer (elements/components): Fire, Water, Air, and Gravel. The four characteristics Iqbal is describing refer to these four components of universe.

Qahhar (furious) = fire,
Gaffar (forgiver) = Water,
Quddusi (Divine/soft/beyong perception) = Air, and
Jabroot (magnificant/standing/huge/mighty) = Mountain/gravel

What Iqbal meant is that the true Muslim is always in tune with the universe, and balances like water balance fire and mountain balance air.

Allahul alam