الْخَبَرُ صَحِيحٌ فِي الْجُمْلَةِ، لَا فِي كُلِّ تَفْصِيلٍ.
The report is broadly sound, though not in every individual detail.
The added phrase “not in every detail” prevents a possible overgeneralization from the opening assertion. Its role is not empty elaboration; it protects the intended limits of the claim. In this context, the additional wording may therefore be analyzed as protective qualification (iḥtirās).
Where the audience already understands the claim to be strictly general, the qualification may be less necessary. In a contested discussion, however, it can decisively block an exaggerated interpretation. Its rhetorical merit lies in preventing misunderstanding rather than merely increasing the number of words.