Incorrect claim: “Every noun beginning with أ is diptote.”
That is false. أَسَدٌ is a common noun and can be fully declinable. Aḥmad’s status is not caused by its first letter alone; proper-name status and the relevant pattern conditions matter.
Recognizing an imperfect-prefix letter is necessary for the author’s second test, not sufficient by itself.
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Diptote Causes — Verb Patterns and Their Conditions
Incorrect claim: “Every noun beginning with أ is diptote.”
That is false. أَسَدٌ is a common noun and can be fully declinable. Aḥmad’s status is not caused by its first letter alone; proper-name status and the relevant pattern conditions matter.
Recognizing an imperfect-prefix letter is necessary for the author’s second test, not sufficient by itself.