Question

In ما أَسْمَاؤُكُما؟ the plural أَسْماء used instead of the dual اِسْمانِ because things which are known to be only one are used in the plural form while speaking of two.

Accepted Answer

اِغْسِلا وُجُوهَكُما (Wash you faces!)- - -حَلَقَ الولدانِ رُؤُوسَهُما (Two boys shaved theird heads)

Text	In ما أَسْمَاؤُكُما؟ the plural أَسْماء used instead of the dual اِسْمانِ because things which are known to be only one are used in the plural form while speaking of two.
Back Extra	اِغْسِلا وُجُوهَكُما (Wash you faces!) - - - حَلَقَ الولدانِ رُؤُوسَهُما (Two boys shaved theird heads)

Plural ما أَسْمَاؤُكُما أَسْماء Dual اِسْمانِ Things Form