the cause. And His saying {upon it} means: upon it. {Then let their listener bring a clear authority}, meaning: a clear proof for what they are upon of polytheism; that is: they have no proof for that.
السَّبَب وَقَوله (فِيهِ) بِمَعْنى: عَلَيْه ﴿فَلْيَأْتِ مُسْتَمِعُهُمْ بِسُلْطَانٍ مُبين﴾ بِحجَّة بيّنة بِمَا همْ عَلَيْهِ من الشّرك، أَي: لَيْسَ عِنْدهم بذلك حجَّة
