Jami` at-Tirmidhi 2604
جامع الترمذي#2604Sahihحَدَّثَنَا مَحْمُودُ بْنُ غَيْلاَنَ، حَدَّثَنَا وَهْبُ بْنُ جَرِيرٍ، عَنْ شُعْبَةَ، عَنْ أَبِي إِسْحَاقَ، عَنِ النُّعْمَانِ بْنِ بَشِيرٍ، أَنَّ رَسُولَ اللَّهِ صلى الله عليه وسلم قَالَ " إِنَّ أَهْوَنَ أَهْلِ النَّارِ عَذَابًا يَوْمَ الْقِيَامَةِ رَجُلٌ فِي إِخْمَصِ قَدَمَيْهِ جَمْرَتَانِ يَغْلِي مِنْهُمَا دِمَاغُهُ " . قَالَ أَبُو عِيسَى هَذَا حَدِيثٌ حَسَنٌ صَحِيحٌ . وَفِي الْبَابِ عَنِ الْعَبَّاسِ بْنِ عَبْدِ الْمُطَّلِبِ وَأَبِي سَعِيدٍ الْخُدْرِيِّ وَأَبِي هُرَيْرَةَ .
An-Numan bin Bashir narrated that the Messenger Of Allah (s.a.w) said:"Indeed the person among the inhabitants of the Fire punished least [on the Day of Judgment] is a man who has two coals beneath his feet, which cause his brain to boil." Other chains report similar narrations
Scholarly Authentication
The label above is the grade most of these scholars gave — one dissenting opinion no longer speaks for all of them. If any scholar calls a narration fabricated, that verdict is shown instead, whatever the others say. Each scholar's own wording:
In-book reference: 39:32