Thus, both paths depend on invalidation of beliefs of these groups in order that purpose is established. Likewise, the three principles – necessity of an Imam, necessity of certainty of his infallibility, and that truth is with this Ummah – as we mentioned, must be established for this argument to stand. We will elaborate on each of these premises briefly, since their details exist in our book on Imamate to an extent that can hardly be expanded further, whereas the purpose of this book is only to explain the topic of occultation and no more. Allah is the One from Whom we seek success for this purpose.