ذِكْرُ الْإِخْبَارِ عَنْ وَصْفِ النَّارِ الَّتِي أُعِدَّتْ لِمَنْ عَصَى اللَّهَ، وَتَمَرَّدَ عَلَيْهِ فِي الدُّنْيَا
The fire which sons of Adam burn is only one-seventieth part of the Fire of Hell. His Companions said: By Allah, even ordinary fire would have been enough (to burn people). Thereupon he said: It is sixty-nine parts in excess of (the heat of) fire in this world each of them being equivalent to their heat. (Using translation from Muslim 2843a)
أَنَّ رَسُولَ اللَّهِ ﷺ قَالَ «نَارُكُمُ الَّتِي تُوقِدُونَ جُزْءٌ مِنْ سَبْعِينَ جُزْءًا مِنْ نَارِ جَهَنَّمَ» قَالُوا يَا رَسُولَ اللَّهِ إِنْ كَانَتْ لَكَافِيَةً قَالَ «إِنَّهَا فُضِّلَتْ عَلَيْهَا بِتِسْعَةٍ وَسِتِّينَ جُزْءًا»