Al-mawqūf (literally, halted) consists of the sayings and actions of the Companions, may Allāh be pleased with them.
Al-maqṭūʿ (literally, severed) consists of the sayings and actions of the tābiʿūn and those after them.
Al-marfūʿ (literally, that which is raised) is what is attributed to the Messenger of Allāh ﷺ.
An omission from the start of the isnād by the compiler's action — this is al-muʿallaq.
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 (literally, a chained or serial ḥadīth).
