Syeduna Abu Hurairah, may Allah be pleased with him, narrates that a Bedouin passed by the Messenger of Allah, peace and blessings be upon him. His health and strength amazed the Prophet, peace and blessings be upon him. The Prophet, peace and blessings be upon him, asked him: "When did you ever feel Umm Milad?" He replied: "What is Umm Milad?" The Prophet, peace and blessings be upon him, said: "Fever." He said: "What is fever?" The Prophet, peace and blessings be upon him, said: "The heat that arises between the skin and the bones is called fever." He said: "I have never felt this." The Prophet, peace and blessings be upon him, then asked him: "Alright, have you ever felt a headache (suda‘)?" He said: "What is suda‘?" The Prophet, peace and blessings be upon him, said: "It is pain between the temples and the head." He said: "I have never felt this either." When the Bedouin left, the Prophet, peace and blessings be upon him, said: "Whoever would like to see a man from among the people of Hell, let him look at this one." In another narration: "Whoever wishes to see someone from the people of the Fire, let him look at this one."