In the name of allah , some ppl asked me how mohammed (pbuh) form his follows here is the answer . Mohammed(pbuh) was a trustier guy he never lies and never make a mistake , he was tolerant to all ppl and all ppl at mecca trust him , when he called from allah and became a prophet he asked his wife khdiga to be a muslim and she do then asked abu bakr his best friend he belived him without any hesitance cuz he know that he never lies and always tell the truth. So he makes his follows by calling them and talking with them then they told thir families and sons about the new religion and its spread now , it was in secret way till omar be a muslim after that it wasn't secret . Whatever i say the words wont give mohammed(pbuh) his right and wont discribe his life journey.