Imam Ahmed Al Hasan (a.s.) said the correct testimony is as follows:
I testify that there is no God but Allah alone, with no partners.
And I testify that Muhammad is His servant and Messenger.
And I testify that Ali and the Imams from his sons are the Hujjahs of Allah.
And I testify that the Mahdi and the Mahdis are the Hujjahs of Allah.
The Imam a.s said: "Congratulations to those who testify by their heart, mind, blood, flesh, and tongue".
There are many who embark on the arc, but few remain committed and firm in the face of tornados, winds and high waves."
A saying of truth Ahmed Al-Hassan (a.s)