Repeat of Revelation: A Hypothesis

Hypothesis of repeatedly revelation of some chapters and verses, found in some Quranic and Tafsir books, rose when two or more reasons are put forth for revelation of one verse. As scholars couldn’t prefer one reason to the other or didn’t want to evaluate views of the past, they supposed that the revelation has been repeated and accepted the reliability of those hadiths without analyzing the text.Lack of proper analysis of hadiths concerning the reasons for revelation is the most important evidence for accepting this supposition. There is no trace of this supposition in works of early scholars like Tabari. This paper views this hypothesis from different perspectives.