كَلَّا ۖ لَيُنۢبَذَنَّ فِى ٱلْحُطَمَةِ
No indeed! He will surely be cast into the Crusher.
وَمَآ أَدْرَىٰكَ مَا ٱلْحُطَمَةُ
And what will show you what is the Crusher?
نَارُ ٱللَّهِ ٱلْمُوقَدَةُ
[It is] the fire of Allah, set ablaze,
ٱلَّتِى تَطَّلِعُ عَلَى ٱلْأَفْـِٔدَةِ
which will overspread the hearts.
English translation: Ali Quli Qarai
No indeed — flung into al-Ḥuṭama, the Fire that mounts over the hearts (104:4-7)
The pivot {kallā} shatters the delusion. al-Ṭabarsī offers three readings of it — "his wealth will not immortalize him," "the matter is not as he supposed," or simply "truly" — before {he will surely be flung into al-Ḥuṭama}, "cast and hurled" into "a name among the names of Hell." On the name itself, the sources agree on the root and diverge only in emphasis: al-ḥuṭama is the intensive of ḥaṭm, "breaking/crushing," extended to "devouring." al-Ṭūsī glosses it as the much-crushing fire whose "root is the destructive breaking"; al-Ṭabāṭabāʾī confirms ḥuṭama as an intensive form and "a name among the names of Hell, as the next verse explains," reading the oath-lām in {layunbadhanna} as a divine oath: "I swear he shall surely die and be cast into al-Ḥuṭama." al-Ṭabarsī relays Muqātil's vivid image — it "crushes the bones and devours the flesh until it bears down upon the hearts." The Enlightening Commentary adds, citing al-Rāghib's Mufradāt, that nabdh is "to discard something as insignificant": the proud will be flung "in the form of mean, unworthy creatures," and it notes the report that ḥuṭama may name not all of Hell but "an extraordinarily hot part of it."
On {And what will make you realize what al-Ḥuṭama is?}, all read it as magnification and dread (al-Ṭabarsī: "magnifying its matter"; al-Ṭabāṭabāʾī: "magnification and terrifying") before the answer {the kindled fire of God}. al-Ṭabarsī notes God ascribes the fire to Himself "so it be known it is not like other fires," describing it with perpetual kindling (al-mūqada). The most striking convergence is on {which mounts up over the hearts}. al-Ṭabarsī reads taṭṭaliʿu as the fire "looming over the hearts so its pain and burning reach them," adding the alternative that "this fire issues from the inner to the outer, contrary to the fires of this world." al-Ṭūsī keeps the literal sense — "its pain and ache reach the hearts." al-Ṭabāṭabāʾī deepens it: al-afʾida (plural of fuʾād) is in the Qurʾān "the source of perception and thought in man — the human soul," so the fire "burns man's inward as worldly fire burns only the outward," recalling {its fuel is people and stones} (al-Taḥrīm 66:6). The Enlightening Commentary presses the same wonder — a fire "whose first effect appears on the heart," burning "inside before outside" — and draws the moral symmetry: it strikes their hearts first because, in this world, "they put pain in the hearts of the believers with their mockeries, backbitings, and taunts."
The Imāmī sources are terser but parallel. al-Qummī glosses al-ḥuṭama as "the Fire that crushes everything" and taṭṭaliʿu as "it blazes up over the heart," appending Abū Dharr's warning to "give the proud tidings of a branding in the breasts and a dragging upon the backs." al-Baḥrānī carries the identical Qummī material — an exoteric reading with no distinctive doctrinal content here.