A ḥadīth in which a narrator has been replaced with another, whether one narrator, several, or even the entire chain, is al-maqlūb (literally, that which has been inverted).
If the narrators of a ḥadīth agree in their wording of transmission, in any verbal feature, in an action or in some shared quality, this is al-musalsal (a chained or serial ḥadīth).
An omission of two or more consecutive narrators at any point in the chain is al-muʿḍal, one of the four kinds of rejected report rooted in a break in the chain.
When a body of narrators take a ḥadīth from a prominent imām, it is called mashhūr (literally, well-known, publicised).
