Sunan Ibn Majah 3475
سنن ابن ماجه#3475Sahihحَدَّثَنَا أَبُو سَلَمَةَ، يَحْيَى بْنُ خَلَفٍ حَدَّثَنَا عَبْدُ الأَعْلَى، عَنْ سَعِيدٍ، عَنْ قَتَادَةَ، عَنِ الْحَسَنِ، عَنْ أَبِي هُرَيْرَةَ، أَنَّ رَسُولَ اللَّهِ ـ صلى الله عليه وسلم ـ قَالَ " الْحُمَّى كِيرٌ مِنْ كِيرِ جَهَنَّمَ فَنَحُّوهَا عَنْكُمْ بِالْمَاءِ الْبَارِدِ " .
It was narrated from Abu Hurairah that the Messenger of Allah (ﷺ) said:“Fever is one of the bellows of Hell, so avert it from yourselves with cold water.”
Scholarly Authentication
The label above is the grade most of these scholars gave — one dissenting opinion no longer speaks for all of them. If any scholar calls a narration fabricated, that verdict is shown instead, whatever the others say. Each scholar's own wording:
Al-AlbaniSahih
Muhammad Fouad Abd al-BaqiSahih
Shuaib Al ArnautSahih Lighairihi
Zubair Ali ZaiHasan
In-book reference: 31:40