Disadvantages of applying the rule of tolerance in the use of historical hadiths

Islamic historiography had been a part of writing hadith. Hadith has been recorded by narrators during history based on the rules of measuring hadith. Narrations are divided into two categories of correct and weak in terms of text and document. Therefore, only valid propositions should be used to discover the facts of the history of narration. The establishment of the rule of tolerance in the arguments of the Sunnah based on the elimination of the conditions of the authority of the single news and by extending to non-jurisprudential narrations, including historical ones, has caused damages in historiography. To consider damages of applying the rule of tolerance in historical narrations, this article with a descriptive-analytical method and by internal and external criticism of some historical narrations, indicated that application of the rule of tolerance caused forgery, manipulation, and doubt in historical narrations and, consequently, in historical researches.