وَلَا يَحْضُرُ أَهْلُ الذِّمَّةِ لِلِاسْتِسْقَاءِ.
Translation: The protected non-Muslim community is not brought to the istisqa gathering.
Ahl al-dhimmah is a classical legal term for non-Muslim residents under a protected covenant in a Muslim polity. This ruling concerns participation in the specifically religious istisqa assembly.
It should not be read as a statement denying ordinary civil rights or respectful treatment.