SHAHADA is the religious expression by which we declare our faith in Allah, His Prophet and the Imam.

Shahada is also called 'KALIMAH'. The Shahada is:
  LA ILAHA ILL-ALLAH, MUHAMMAD-UN RASULU-LLAH,  ALIYYUN AMIRUL MU'MINEEN 'ALIYYULLAH.

This is recited in the second part of our Holy Du'a. 'La ilaha ill-Allah' means 'THERE IS NO GOD BUT ALLAH'. 'Muhammad-un Rasulu-llah' means 'MUHAMMAD IS THE MESSENGER OF ALLAH'. 'Aliyyun Amirul Mutmineen 'Aliyyullah' means 'ALI, THE MASTER OF BELIEVERS, IS FROM ALLAH'.

When we recite the Shahada after the Tasbih, we add the words
'ASHADU ANNA' and say it as follows:
ASHADU ANNA LA ILAHA ILL-ALLAH,
ASHADU ANNA MUHAMMAD-UN RASULU-LLAH,
ASHADU ANNA AMIRUL MU'MINEEN 'ALIYYULLAH.

This means:

I BEAR WITNESS THAT THERE IS NO GOD BUT ALLAH
I BEAR WITNESS THAT MUHAMMAD IS THE MESSENGER OF ALLAH I BEAR WITNESS THAT ALI, THE MASTER OF BELIEVERS, IS FROM ALLAH.

Any person joining the Ismaili Faith must recite this SHAHADA.