وقد تحصل الغرابة بتصرف في الاستعارة العامية
Rarity can also arise through an inventive treatment of an otherwise commonplace metaphor.
Here the original comparison is not unprecedented. Rapid travel resembles flowing water in a broadly understandable way. Yet the poet does not merely say that the camels move “like a torrent”; the grammatical attribution and the focal point of the scene are redesigned.
Such creative attribution and arrangement can transform an ordinary resemblance into a striking expression. The next verse supplies the specific illustration.