The Ways of Identifying the Authority of Narrators

ince a long time ago researchers of hadith for distinguishing of genuine tradition from the weak one have considered them in their content and chain.Iidentifying the state of the narrators has an old background in the history hadith. Acceptance of traditions is provided that their narrators have some conditions including authority of the narrators. The main question is that how this condition or other conditions can be recognized? This writing has shortly explained two ways of particular and general authentication and their cases.