An inquiry into an unknown transmitter proceeds in order.
1. Identity: Is the person named, or described only as “a man” or “a teacher”?
2. Names and aliases: Do several names, kunyas, and affiliations belong to the same individual?
3. Known pupils: Does only one person narrate from him, or two or more?
4. Critical evaluations: Is there credible authentication by a qualified evaluator? Is there contrary evidence?
5. Assessment: Does the evidence warrant acceptance, rejection, or suspended judgment pending investigation?
In summary: the mubham is unidentified; the majhūl al-ʿayn is named but insufficiently established; and the mastūr has a more identifiable transmission profile but still lacks a secure critical standing. The following discussion turns to innovation and narrator integrity.