Language:
كتاب بدء الخلق
59  
Beginning of Creation
(10)
Chapter: The description of the (Hell) Fire and the fact that it has already been created
(10)
باب صِفَةِ النَّارِ وَأَنَّهَا مَخْلُوقَةٌ
Sahih al-Bukhari 3265

Narrated Abu Huraira:

Allah's Messenger (ﷺ) said, "Your (ordinary) fire is one of 70 parts of the (Hell) Fire." Someone asked, "O Allah's Messenger (ﷺ) This (ordinary) fire would have been sufficient (to torture the unbelievers)," Allah's Apostle said, "The (Hell) Fire has 69 parts more than the ordinary (worldly) fire, each part is as hot as this (worldly) fire."

حَدَّثَنَا إِسْمَاعِيلُ بْنُ أَبِي أُوَيْسٍ، قَالَ حَدَّثَنِي مَالِكٌ، عَنْ أَبِي الزِّنَادِ، عَنِ الأَعْرَجِ، عَنْ أَبِي هُرَيْرَةَ ـ رضى الله عنه ـ أَنَّ رَسُولَ اللَّهِ صلى الله عليه وسلم قَالَ ‏"‏ نَارُكُمْ جُزْءٌ مِنْ سَبْعِينَ جُزْءًا مِنْ نَارِ جَهَنَّمَ ‏"‏‏.‏ قِيلَ يَا رَسُولَ اللَّهِ، إِنْ كَانَتْ لَكَافِيَةً‏.‏ قَالَ ‏"‏ فُضِّلَتْ عَلَيْهِنَّ بِتِسْعَةٍ وَسِتِّينَ جُزْءًا، كُلُّهُنَّ مِثْلُ حَرِّهَا ‏"‏‏.‏
Reference : Sahih al-Bukhari 3265
In-book reference : Book 59, Hadith 75
USC-MSA web (English) reference : Vol. 4, Book 54, Hadith 487
  (deprecated numbering scheme)