fever

Ibn Mas‘ūd (may Allah be pleased with him) reported: I visited the Prophet (may Allah's peace and blessings be upon him) while he was in pain because of fever, so I touched him and said: "You are in great pain from raging fever." He said: "Indeed, the pain I feel from fever is like the pain that two men from among you might get." [Sahih/Authentic] - [Al-Bukhari and Muslim]