Tafsir of Al-Humazah 104:6

(The Fire of Allah) is the predicate of an omitted subject, and the sentence serves to clarify the nature of the entity being asked about; that is, it is the Fire of Allah. (The Kindled) by the command of Allah—Mighty and Majestic is He. In its attribution to Him—Glorified be He—and its description as being "kindled," there is an intensity to its state that cannot be surpassed.