Another group claims the Imamate of one whose infallibility is not certain is an assertion invalidated by our proofs with regard to the necessity of certainty about infallibility of the Imam. Observation testifies contrary to the contention of others, who maintain the infallibility of their supposed Imams; because their actions are apparent and their conditions violate infallibility, hence there is no need to disprove a belief, the contrary of which is so very evident and clear. Persons for whom infallibility was claimed and certain groups followed them, such as the Kaisaniyya, who believe in the Imamate of Muhammad Ibne Hanafiyyah, the Nawusiyya, who believe in the Imamate of Ja’far Ibne Muhammad and also believe that he is not dead, and the Waqifa, who believe that Musa Ibne Ja’far is not dead – all these beliefs are invalid for reasons we will shortly mention.