Suppose a particular attribution has been established to be fabricated: it must not be propagated as an authentic saying of the Prophet. If a real uncertainty remains about a transmitter or continuity, investigation is required before declaring it sound; it is not automatically “fabricated.”
The outcomes differ: (1) an established false attribution is rejected, (2) an unresolved claim is withheld pending examination, and (3) a verified report is accepted according to the relevant conditions.