Hal is an interrogative particle, ḥaḍara is a past verb, Zaydun its subject; naʿam is an indeclinable reply particle with no case position.
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Parsing a Simple Yes Reply
Reply Particles: Naʿam, Balā and All Six Forms
Hal is an interrogative particle, ḥaḍara is a past verb, Zaydun its subject; naʿam is an indeclinable reply particle with no case position.