أَلَيْسَ الصِّدْقُ أَفْضَلَ مِنَ الْكَذِبِ؟
Is truthfulness not better than lying?
When the addressee accepts the shared value, the question draws out explicit acknowledgment. This supports a taqrīrī reading: it is not a request for an unknown comparison but a way of making the listener affirm an accepted proposition.
An inkārī question primarily repudiates a contemplated act or claim; a confirmatory question seeks admission of an understood truth. Context may produce overlap, but the intended speech act remains the basis of classification.