فَمَا كَانَ مَنْقُولًا بِطَرِيقِ الْآحَادِ فَمَرْدُودٌ
When an apparently conflicting incident rests only on isolated transmission, the text rejects its use for overturning a settled principle here.
When a report seems to conflict with a definite principle of prophetic integrity, the first step is to assess how firmly the report is established. A weak or nondecisive narration must not be treated as a conclusive counterexample to certain doctrine.
The second step is interpretation: figurative expression, the timing of the incident, context and plausible readings are examined. A surface wording does not always prove the particular moral attribution that a critic assumes.