«وَالشِّعْرَ وَنَاسِجَ بُرْدَتِهِ»
And about the poetry and the one who wove its cloak.
Nāsij literally means a weaver. The verse treats poetry as a woven cloak: just as cloth requires skillful arrangement of threads, poetry requires a crafted arrangement of words, metre, and imagery. The metaphor visualizes literary craftsmanship.