Hadith of the Ark ""perished whoever turned away from it"" also comes along." And in his another book, Al-Heithami indicates this hadith as authentic (sahih). According to Dahlan, the authenticity of this hadith is confirmed by different sources. The hadith implies the absolute priority of "Ahl al-Bayt" to all others, otherwise Muhammad would have forbidden to follow them. According to Shia scholars, the only path to salvation is by following the "Ahl al-Bayt", so they must be infallible ("Ma'sum"), otherwise they will mislead their followers. If they are infallible, they must be Imam definitely. According to this hadith, they are the criterion of distinguishing
Introduction to the Science of Hadith the earlier scholars as appropriate and mostly sufficed with conclusions drawn from them and then specifying or clarifying a definition. The definitions Ibn al-Ṣalāḥ used to describe the individual terms of hadith terminology were largely in accordance with the views of the majority of hadith specialists. In some instances, he would mention an undisputed opinion, before mentioning one that was widely accepted and then describing the difference. He would generally precede his critique of differing opinions by saying: "I say". For the primary terms described, he mentioned an example to illustrate that definition. His goal in doing so was to