عَلِمْتُ أَزَيْدٌ نَاجِحٌ؟
Translation: I learned whether Zayd was successful.
The interrogative particle keeps al-ṭālibu/nājiḥun nominative within the embedded clause; that clause occupies the two-object position.
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Parsing Suspension
Verbs of the Heart: Two Objects, Cancellation and Suspension
عَلِمْتُ أَزَيْدٌ نَاجِحٌ؟
Translation: I learned whether Zayd was successful.
The interrogative particle keeps al-ṭālibu/nājiḥun nominative within the embedded clause; that clause occupies the two-object position.