The proof of the testimony that there is no god but Allah?

Allah Almighty's Saying: {Allah bears witness that La ilaha illa

Huwa (none has the right to be worshipped but He), and the

angels, and, those having knowledge (also give this witness),'

(He always) maintains His creation in Justice. La ilaha illa Huwa

(none has the right to be worshipped but He), the All-Mighty, the

All-wise}. (Al'Imran, 18)

Allah says: {So know (O Muhammad (Peace be upon him)) that,

La ilaha illallah (none the right to be worshipped but Allah)}. (Muhammad, 19)

Allah says: {Say (O Muhammad (Peace be upon him)): "I am only

a warner and there is no Ilah (god) except Allah (none has the

right to be worshipped but Allah) the One, the Irresistible}. (Sad, 65)

Allah says: {No son (or offspring) did Allah beget, nor Allah says: {No son (or offspring) did Allah beget, nor is there any Ilah (god) along with Him. (If there had been many gods),

then each god would have taken away what he had created, and

some would have tried to overcome others! Glorified is Allah

above all that they attribute to Him!}. (Al-Mu'minun, 91)

Allah says: {Say (O Muhammad (Peace be upon him) to these

polytheists, pagans): "If there had been other alihah (gods) along

with Him as they assert, then they would certainly have sought

but a way to the Lord of the Throne (seeking His Pleasures and to

be near to Him)}. (Al-Isra',42)