‏السلام : Hadeeth No:5477 Ibn Umar reported Allaah's Prophet (sallAllaahu alayhi wa sallam) as saying: Fever is due to vehemence of the beat of Hell, so cool it with water....

‏فضائل الصحابة‏ : Hadeeth No:5891 This hadith has been narrated on the authority of Yunus through another chain of transmitters....