«كِتَابٌ أَنْزَلْنَاهُ إِلَيْكَ لِتُخْرِجَ النَّاسَ مِنَ الظُّلُمَاتِ إِلَى النُّورِ»
A Book We have sent down to you so that you may bring people out of darkness into light.
«الظُّلُمَات» conveys misguidance and «النُّور» guidance. Misguidance obscures the right path as darkness obscures the physical way, while guidance clarifies truth as light makes things visible.
Both are explicit metaphors (tasrihiyya): the source terms “darkness” and “light” are stated, while their intended referents are supplied by context.