كأن النجوم بين دجاها سنن لاح بينهن ابتداع
It is as though the stars amid night’s darkness were Sunnah practices among which innovations have appeared.
The stars are visible, while Sunnah practices concern religious conduct. Bright stars against dark night are sensory, but religious practices and innovations do not literally possess the same physical colours. The visual structure is thus supplied through imaginative interpretation.
The purpose is more than applying the word “light” to two matters. The contrast suggests bright, recognizable guidance amid an obscuring background. The impact depends on the whole pattern of contrast.