Arabic Text
حَدَّثَنِي يَحْيَى بْنُ سُلَيْمَانَ، حَدَّثَنِي ابْنُ وَهْبٍ، قَالَ حَدَّثَنِي مَالِكٌ، عَنْ نَافِعٍ، عَنِ ابْنِ عُمَرَ ـ رضى الله عنهما ـ عَنِ النَّبِيِّ صلى الله عليه وسلم قَالَ " الْحُمَّى مِنْ فَيْحِ جَهَنَّمَ فَأَطْفِئُوهَا بِالْمَاءِ ". قَالَ نَافِعٌ وَكَانَ عَبْدُ اللَّهِ يَقُولُ اكْشِفْ عَنَّا الرِّجْزَ.
English Translation
Narrated Nazi': Abdullah bin 'Umar said, "The Prophet said, 'Fever is from the heat of Hell, so put it out (cool it) with water.' " Nafi' added: 'Abdullah used to say, "O Allah! Relieve us from the punishment," (when he suffered from fever).
This hadith is from Sahih al-Bukhari, the most rigorously authenticated collection in Islamic scholarship. No editorial opinion is added.