The chapter appears under al-ism al-mabnī (indeclinable nouns), not under ordinary declinable nouns.
Indeclinability means the word does not cycle through nominative, accusative and genitive endings merely because an external governing element changes.
A particular cry’s pronunciation must be grounded in usage, not supplied as an invented case ending.
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Al-Aṣwāt — Sound-words, Their Two Uses and Grammatical Analysis
The chapter appears under al-ism al-mabnī (indeclinable nouns), not under ordinary declinable nouns.
Indeclinability means the word does not cycle through nominative, accusative and genitive endings merely because an external governing element changes.
A particular cry’s pronunciation must be grounded in usage, not supplied as an invented case ending.