وَجَدْنَا الْخَلَلَ فِي مِيزَانَيْنِ، وَلَا يَدُلُّ ذَلِكَ وَحْدَهُ عَلَى تَعَمُّدِ الْغِشِّ.
We found faults in two scales, but that fact alone does not establish intentional dishonesty.
The bare finding could cause a listener to infer deliberate cheating. The added clause prevents that unintended inference, providing an example of iḥtirās. It does not deny the presence of faults; it limits what may legitimately be inferred about intention.
This is rhetorically useful expansion because without the qualification the audience might enlarge the report beyond the evidence.