According to the traditionists, a Hadith can only be considered reliable when its Sanad offers an unbroken series of credible and veracious authorities till the Prophet Muhammad (blessings and peace of Allah be upon him)). The critical investigation of the Sanad had caused the Muslim scholars to make thorough research. if the narrator between the Successor and Prophet Muhammad (blessings and peace of Allah be upon him)). is omitted from a given isnād, the hadith is mursal. This means that if a hadith has an acceptable chain all the way to a Successor, and the successor attributes it to an unspecified companion, the isnād is considered acceptable. There are, however, different views in some cases.In this article the authenticity of mursal and opinion of muslim scholars has been discussed.
Karim Dad, Muhammad Saeed Shafiq. (2014) Mursal Hadith & its Authenticity: A critical analysis, Acta Islamica, Volume-02, Issue-1.