أَدِبْسٌ فِي الْإِنَاءِ أَمْ عَسَلٌ
Is there syrup or honey in the vessel?
For taṣawwur, a satisfactory answer supplies the requested identity or characteristic: “It is syrup,” for instance. For taṣdīq, yes/no directly settles the proposition.
Replying only “ʿAmr” to “Did Zayd stand, or not?” would leave the asserted relation unanswered; replying merely “yes” to “syrup or honey?” would likewise fail to identify the requested alternative.