Ibn Umar reported Allah's Messenger (ﷺ) as saying:Fever is from the vehement raging of the fire of Hell, so extinguish it with water
Hadith No. 5753
Sahih Muslim
Ibn Umar reported Allah's Messenger (ﷺ) as saying:Fever is from the vehement raging of the fire of Hell, so extinguish it with water