Sahih Muslim
Sahih Muslim 213b
وَحَدَّثَنَا أَبُو بَكْرِ بْنُ أَبِي شَيْبَةَ، حَدَّثَنَا أَبُو أُسَامَةَ، عَنِ الأَعْمَشِ، عَنْ أَبِي إِسْحَاقَ، عَنِ النُّعْمَانِ بْنِ بَشِيرٍ، قَالَ قَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم " إِنَّ أَهْوَنَ أَهْلِ النَّارِ عَذَابًا مَنْ لَهُ نَعْلاَنِ وَشِرَاكَانِ مِنْ نَارٍ يَغْلِي مِنْهُمَا دِمَاغُهُ كَمَا يَغْلِي الْمِرْجَلُ مَا يَرَى أَنَّ أَحَدًا أَشَدُّ مِنْهُ عَذَابًا وَإِنَّهُ لأَهْوَنُهُمْ عَذَابًا " .
Abu Bakr ibn Abi Shayba narrated to us: Abu Usama narrated to us, from al-A‘mash, from Abu Ishaq, from al-Nu‘man ibn Bashir, who said: The Messenger of Allah (peace and blessings be upon him) said, “The least tormented among the people of the Fire will be someone wearing two sandals with two straps made of fire. His brain will boil from them as a pot boils. He will think that no one is being punished more severely than he is, even though he is the least severely punished among them.”
Translation notes
The report contrasts the person’s perception of his punishment with his actual status as the least tormented.