The Arabic word Allah is very familier for educated people, but many of non-Muslims are mis- understanding the real meaning of Allah. They think Allah is Creator and same ideology for Christianity God or Hindusim Attman. This understanding lead to misunderstand for real meaning for Allah.

Allah is Initiator of all of universes and initiates the settiing up the laws of origin of every thing. Or Allah is the initiator of universal truth (Dharma) which is discovered by all of human being Buddha. But Allah gives the power to human being to innovate according with attainning intellectual power limited. 

None is onbehalf of Allah

Islamic (Santisukha) theory about Allah can be said same theory of Buddhism teaching. In Buddhsim Allah is Anattam (A-nat-na) which general means opposite of Attman, because Buddhism revolts the Hindusim theroy Attman which is Spirit and creator of the world. On the other hand, Hisdusim accepts their religious founders as God (Attman) and they believe that these religious leaders are incarnated of God or God's spirit. Or God came to world as human being. Gautama, founder of Buddhism revolts this kind of ideology and claims human is human and human can't be God.

In his claiming, human can find the universal truh, and human need to follow the universal laws to attain the knowing of; and the real source of Dharma can't be seen with ordinary eyes. That's he use the word source of mind instead of spirit.

The word Anattam means nothing but it indicates One thing.

Even today Buddhism straightly deny about Crator who never incarnate as human being, Gautama clearly mention in Tipitakak there is Creator. His saying religious term for God is same meaning of Allah's in Arabic.

None is son of Allah

Among the Middle-East religioins, only Islam claims that it can't set up example for Allah, and not prophet is Son of Allah. Allah is initiator of all sources.

The Holy Koran clearly says:

Allah, is One

Allah is He on Whom all depend.

He begets not, nor is He begotten;

And none is like Him. (CH 112)

Therefore, we can't think Allah belong to physical body and abide in Heaven.

Allah's mercy is overhwhelming onto all things, not only onto Prophets and Buddhahood. Every human being has right to attain knowing of, and enter into mercy of Allah or right to know the universal truth.

Allah is God of believers and unbelievers. Allah is God of all universes. Allah is God of all natures. And Allah is the initiator of Dharma.