I will say only La ilaha Il lalaah.

Re: I will say only La ilaha Il lalaah.

So, back to my question:

How did people became Muslims at the time when Prophet Mohammad (pbuh) was alive? What did they proclaim?

I am sure there is more than one hadith out there on this issue... I am sure in 1400 years, someone thought about this issue, so we just need to do little bit of digging for true information if we are sincere with our intentions here.