Defining the authenticity of hadith, it can be talked about different approaches directed towards the authenticity relationship between sanad and text which are two elements of the hadith. In terms of the narration sciences the most remarkable of these approaches is the authenticity of sanad that would not require the authenticity of the hadith as a whole. Accordingly, even if the sanad is authentic, situations such as defects and outlandish contents that can be located in the text of hadith, has damaged the authenticity of hadith. However, existing more defects in sanad's and losting every outlandish content on authenticity mentioned in the definition of authentic hadith in hadith methodolgy has complicated basing on the text in the determination of authenticity. So the discourse "sanad's authenticity is not required the text's authenticity", shown as the rule of the hadith methodology and its emergence in terms of hadith methodology and its development and reflections in the historical process are important. In this study would be discussed the integrity or separation of authenticity of sanad and text in critical of authentic hadith by analyzing and determining together with focusing on hadith methodology in context of hidden and outlandish content.