(26) باب لِكُلِّ دَاءٍ دَوَاءٌ وَاسْتِحْبَابُ التَّدَاوِي
'A'isha reported Allah's messenger (ﷺ) as saying:
Fever is from the vehement raging of the Hell-fire, so cool it with water.
Reference: Sahih Muslim 2210 a
In-book reference: Book 39, Hadith 109
USC-MSA web (English) reference(deprecated numbering scheme): Book 26, Hadith 5480