عَصًا ← عَصَوَانِ
ʿAṣan (staff) has a final alif originating from wāw in a three-letter word.
Its dual restores wāw: ʿaṣawāni nominative, ʿaṣawayni accusative/genitive.
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Maqṣūr with Original Wāw
The Dual Noun: Inflection, Maqṣūr, Mamdūd and Iḍāfah
عَصًا ← عَصَوَانِ
ʿAṣan (staff) has a final alif originating from wāw in a three-letter word.
Its dual restores wāw: ʿaṣawāni nominative, ʿaṣawayni accusative/genitive.