I will say only La ilaha Il lalaah.

[USResident]

Re: I will say only La ilaha Il lalaah.

@Jaan Leva

I can't refer to you as I don't have the books handy... and searching online isn't helpful. Since, I can't get the info, maybe you can tell us which shahada they said and what was Prophet's reaction?

For all I know, I can find the Shahada in the ahadith and thats it. How the call to prayer (Adhan) originated can be found in the ahadith however how the testimony of faith originated (atleast I have not come across it yet) is not known however what it is, can clearly be found in ahadith.