(51) باب صِفَةِ الْجَنَّةِ وَالنَّارِ
Narrated An-Nu`man:
I heard the Prophet (ﷺ) saying, "The person who will have the least punishment from amongst the Hell Fire people on the Day of Resurrection, will be a man under whose arch of the feet a smoldering ember will be placed so that his brain will boil because of it."
Reference: Sahih al-Bukhari 6561
In-book reference: Book 81, Hadith 150
USC-MSA web (English) reference(deprecated numbering scheme): Vol. 8, Book 76, Hadith 566