Ubaydullah bin 'Abdullah bin 'Utba عبيد الله بن عبد الله بن عتبة بن مسعود · Chapters on Medicine

“I heard the Prophet (ﷺ) say: ‘Fever is from the heat of the Hell-fire, so cool it down with water.’ He entered upon a son of ‘Ammar and said: ‘Take away the harm, O Lord of mankind, O God of mankind.’”