According to Dr Sharib:

"Al-'Ali is the One Who is so high in status and in prestige that He
cannot be imagined or conceived of. He is higher than any conceivable
height."

"To emulate the name you should give up low habits and abject living.
You should adopt lofty ideals and a good character, ignore the trifles of
life, imbibe a moral courage and shun idleness and
narrow-mindedness."

Appropriate invocation of the name can make a child grow up in a
healthy way, can help in traveling, and can help the poor obtain wealth.

see 'The 99 Most Beautiful Names of Allah' by Dr Zahurul Hassan Sharib




Some other references:



























Al-Ghazzali speaks eloquently of how to gain an insight into the
significance of this name. The 'All-High' refers to an absolute height
which is not relative to what is less high as is the case with what is
created. Rational thought requires that we grade things - as we do in the
case of cause and effect - the cause always being 'above' or 'higher'
than the effect. Thus, in reason, everything is relative or subordinate to
the Truth, but the Truth is not relative to anything.
To understand height in this sense as a merely spatial phenomenon he
says is not to go beyond the senses, which is the level of the animals.

The 'Throne' being the 'most exalted body', that God is described as
being seated on it (i.e. above it) indicates He is above all. I take this to
mean that He (God) is not merely at the apex of a pyramid, so to speak,
but above each and every individual thing.

He points out that man cannot be absolutely high. Even the Holy
Prophet, who is higher than any other man, is high only by comparison to
other men.

(Al-Ghazzali - The Ninety-nine Beautiful Names of God. Trans. Burrel/Daher: ITS: 1992.)


To ascend figuratively, within the heart, to the Throne which is mirrored
therein, requires the deepest humility and purity, since the nearer one
draws the more intensive becomes the reflected glory, and the more
inclined is the individual soul to attempt to appropriate that glory to itself.
This is, in certain respects, the high point of spiritual guidance.

JMZ
Bismillah ir Rehman ir Rahim
The Most High
The Highest One
Al-'Ali
(Al-'Aleey)  
Qur'an 2:255
Allah! There is no god
But He, the Living,
The Self-subsisting, Eternal,
No slumber can seize Him
Nor sleep. His are all things
In the heavens and on earth.
Who is there can intercede
In His presence except
As He permitteth? He knoweth
What (appeareth to His creatures
As) Before or After
Or Behind them
Nor shall they compass aught
               of His knowledge
Except as He willeth.
His throne doth extend
Over the heavens
And the earth, and He feeleth
No fatigue in guarding
And preserving them
For He is the Most High
The Supreme (in glory).
'allaahu laaa illaaha 'illaa-Huu.
al-Hayyul-Qayuum. Laa ta' - khuzuhuu
sinatunw-wa laa nawm. Lahuu maa
fissamaawaati wa ma fil 'arz.
Man-zallazii yashfa-'u 'indahuuu illaa
bi-'iznih? Ya'-lamu maa bayna
'aydiihim wa maa khalfahum. Wa laa
yu-hiituuna bi-shay -'im-min 'ilmihiii
'illaa bimaa shaaa'. Wasi-'a
Kursiyyu-hus-Samaawaati wal-'arz; wa
laa ya-'uudu-huu hifzu-humaa wa
Huwal-'Aliyyul -'aziim.





(Qur'an 2:255 trans. Y. Ali)