Although all these different <answer>Shia</answer> tariqahs belong to the <answer>Shia</answer> group (as opposed to the Sunni group) in Islam, there are major doctrinal differences between the main <answer>Shia</answer> tariqahs. After that there is the complete doctrinal break between all the different <answer>Shia</answer> tariqahs whose last Imams have gone into Occultation and the <answer>Shia</answer> Nizari Ismailis who deny the very concept of Occultation. The <answer>Shia</answer> Nizari Ismailis by definition have to have a present and living Imam until the end of time.[citation needed] Thus if any living Nizari Ismaili Imam fails to leave behind a successor after him then the Nizari Ismailism’s cardinal principle would be broken and it’s very raison d'être would come to an end.
What group do the Shia tariqahs belong to?
Shia