Is the phrase "تَؤُزُّهُمْ أَزًّا" a circumstantial clause or a causal one for the sending of devils? And what is the meaning and eloquence of the word "تَؤُزُّهُمْ"?

The phrase "تؤزهم" (ta'uzzuhum) is an adverbial modifier (ḥāl) describing the devils, meaning that the devils are vehemently inciting and moving them. Alternatively, it could be an explanatory new sentence (isti'nāf bayānī), answering an implied question about the devils' actions towards them. This word depicts the disquiet and inconsistency of the disbelievers in their creed and thought, being a metaphor derived from the intense bubbling sound (azīz) of a furiously boiling cauldron.