Hadith of position an Imam of his own time when he was appointed as the fourth Rashidun Caliph. Ibn Hajar al Asqalani holds another view and according to him the caliphate of Ali should have been limited to the life of the Islamic Prophet Muhammad. Hadith of position The hadith of position (, "Hadith al-Manzilah") is a Sahih hadith in Islamic traditions, in which Muhammad draws a parallel between himself and Musa (Moses) and Ali to Haroun (Aaron). It is one of the primary hadiths used by the Shia to justify Ali's right in the succession to Muhammad; Sunnis however, interpret it otherwise
Introduction to the Science of Hadith authored an abridgement: The following have set "Introduction" to verse, adding some content in the process: The numerous editions of the "Introduction" in its original Arabic include two of the more reliable: The "Introduction" has been translated into English and published as "An Introduction to the Science of Hadith", by Eerik Dickinson, as part of the Great Books of Islamic Civilization series. The translator has provided a biography of Ibn al-Ṣalāḥ derived from numerous sources, in addition to copious footnotes throughout. It is published by Garnet Publishing Limited, Reading, 2006, 356 pgs. Introduction to the Science of Hadith (Ibn al-Ṣalāḥ's)