زَيْدٌ نَفْسُهُ: masculine singular -hu.
هِنْدٌ نَفْسُهَا: feminine singular -hā.
الرَّجُلَانِ أَنْفُسُهُمَا: dual -humā.
الْقَوْمُ كُلُّهُمْ: masculine plural -hum.
النِّسَاءُ كُلُّهُنَّ: feminine plural -hunna.
The pronoun’s referent must be identified correctly in each construction.