Sunan Ibn Majah Book 37, Hadith 4318

حَدَّثَنَا مُحَمَّدُ بْنُ عَبْدِ اللَّهِ بْنِ نُمَيْرٍ، حَدَّثَنَا أَبِي وَيَعْلَى، قَالاَ حَدَّثَنَا إِسْمَاعِيلُ بْنُ أَبِي خَالِدٍ، عَنْ نُفَيْعٍ أَبِي دَاوُدَ، عَنْ أَنَسِ بْنِ مَالِكٍ، قَالَ قَالَ رَسُولُ اللَّهِ ـ صلى الله عليه وسلم ـ ‏ "‏ إِنَّ نَارَكُمْ هَذِهِ جُزْءٌ مِنْ سَبْعِينَ جُزْءًا مِنْ نَارِ جَهَنَّمَ وَلَوْلاَ أَنَّهَا أُطْفِئَتْ بِالْمَاءِ مَرَّتَيْنِ مَا انْتَفَعْتُمْ بِهَا وَإِنَّهَا لَتَدْعُو اللَّهَ عَزَّ وَجَلَّ أَنْ لاَ يُعِيدَهَا فِيهَا ‏"‏ ‏.‏

It was narrated from Anas bin Malik that the Messenger of Allah (ﷺ) said:“This fire of yours is one-seventieth part of the fire of Hell. Were it not that its heat has been reduced by water twice, you would not have been able to benefit from it. And it is praying to Allah, asking Allah not to return it (to its original level of heat).”