The concept of god in islam
لَا إِلَٰهَ إِلَّا ٱللَّٰهُ مُحَمَّدٌ رَسُولُ ٱللَّٰهِ
layilaha illallaah muhammadhan rasoolullaah.
There is no god except Allah.
and muhammadh is the prophet of god.
in the qur' an
Say, "He is Allah , [who is] One,
Allah , the Eternal Refuge.
He neither begets nor is born,
Nor is there to Him any equivalent."
ALQUR AN -(Surat Al-'Ikhlāş 112)
Sahih International