وَكَذَلِكَ عَيْنُهُ، وَأَعْيُنُهُمَا أَوْ عَيْنَاهُمَا، وَأَعْيُنُهُمْ.
Translation: Likewise ʿayn appears as ʿaynuhu for one, aʿyunuhumā or ʿaynāhumā for two, and aʿyunuhum for many.
Here ʿaynuhu functions as semantic emphasis. Aʿyunuhumā uses a broken-plural base, whereas ʿaynāhumā is dual in form.
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Tawkīd: Verbal and Semantic Emphasis
وَكَذَلِكَ عَيْنُهُ، وَأَعْيُنُهُمَا أَوْ عَيْنَاهُمَا، وَأَعْيُنُهُمْ.
Translation: Likewise ʿayn appears as ʿaynuhu for one, aʿyunuhumā or ʿaynāhumā for two, and aʿyunuhum for many.
Here ʿaynuhu functions as semantic emphasis. Aʿyunuhumā uses a broken-plural base, whereas ʿaynāhumā is dual in form.