Muḍṭarib is a Hadith transmitted in conflicting forms that cannot be reconciled and for which no version can be preferred.
• The reports conflict.
• They cannot be understood together in a way that removes the conflict.
• Neither can be preferred on a sound evidential basis.
1. Reconciliation: explaining the reports so that they no longer conflict.
2. Preference: establishing, on evidence, that one version is stronger.
A muḍṭarib report is weak and rejected; after removal of the conflict it may serve as evidence, subject to other necessary conditions.