Bismillah was-salatu was-salaam `ala rasoolAllah , `Amma Ba`d :
Depending on the number of the reporters of the hadeeth in each stage of the isnad, i.e. in each generation of reporters, it can be classified into the general categories of Mutawatir (consecutive) or Ahad (single) hadeeth. Sometimes an ahad route may also be varied depending on the type of transmission as it comes in Ma`rifah Uloom of Imam Hakim and others that even the sole transmission of one town from another town falls into ahad category at times. Ahad narrations are sub-divided into many types such as `Azeez, Mashoor, ghareeb and so on. Each again branching into some more types. But the general definition would be that a report that does not reach the level of tawatur is usually called as khabar-ahad. To those who don't understand this should first study the books of Mustalahal-Hadeeth
Now this topic should be read such that the view points of both sides of the salaf be known. Those who accept the authority of khabarul wahid and those who restrict it in `aqeedah. Usually while discussing this topic the scholars also quote a huge number of narrations describing the importance of a prophetic tradition. I have skipped that (except very few) and focused on translating and compiling narrations that discuss the issue of mutawatir vs ahad in regards to `aqeedah. This is to convey the jist of the information in a short quick way and also keep it brief. I begin with what
Hafidh ibn Hajar rahimahullah said :
