There are reports regarding the conduct of infallible Imams particularly Amir al-Momenin Ali (PBUH) in relation to the way of dealing with the opponents. They are included overt curse and reproach along with the name and title. Considering the fallibility of Imams, it is difficult to accept these reports. In this research, it has been endeavored to validate the samples of abovementioned reports based on the tradition of Shiite scholars toward the investigation of the document of narrations by taking advantage of the historical studies. Regarding the reputation of reports, the research on the amount of validity of their documents may look initially unjustifiable. Nevertheless, the investigation of them can illuminate the weakness of the documents and consequently the low validity of earlier reports. This research concludes that these reports have been provided by the deviated political groups with the intention of fabrication due to different motives.