Picture this..

The prophet Muhammed (PBUH) transmitted all the knowledge that he had and left nothing hidden from us.

Now, The group that existed at the time of the prophet with the prophet are the true followers.

The kalima and the concepts that the people at the time of the prophet held, is the right kalima and the right concept.

So now if you ask any shia whats the kalima that was preached and taught by the prophet and read by his companions its clear it will be 'There is none worthy of worship except Allah and Muhammed(PBUH)is his prophet'

But but here is the catch...
The shia kalima is 'There is none worthy of worship except Allah and Muhammed(PBUH)is his prophet and Ali(RA) is the wasee of Allah'

So now you ask the shia is this the kalima that the prophet taught ? the answer is No

Then you ask him is this the kalima that Ali(RA) read and entered into Islam or for that matter Fatima(RA) Hassan and Hussain(RAM), the plain simple answer is NO.

They all read 'There is none worthy of worship except Allah and Muhammed(PBUH)is his prophet and Ali(RA) is the wasee of Allah'

So you see akhi the sect whose kalima itself is flawed and man made how can they be on the correct path leave alone their other concepts

And with Allah is guidance.