The Preservation of Hadith by Ibrahim Madani

Muttaüil: This defines a úadīth in which the chain of narrators is complete and no missing link is found between the narrators. Munqaøi‘: A úadīth in which one or more than one narrator is missing from a chain of narrators [regardless of whether it be from one or two different areas in the chain of transmission]. Mu‘ðal: Such a úadīth has two or more than two narrators missing from one area of the chain.

Mu‘allaq: In this type of úadīth, a narrator is missing from the beginning of the chain.

Mursal: In this ahdīth, a narrator between the first successor [Tabi] and the Blessed Prophet ({PBUH) is missing and the first successor narrates the hadīth saying,