Mukhtasar Bukhari

Umm al-Mu’minin Aisha (may Allah be pleased with her), the truthful, narrates from the Noble Prophet (peace and blessings of Allah be upon him) that he (peace be upon him) said: “Fever is from the boiling of Hell, so cool it with water.”

Narrated from Sayyiduna Abu Hurairah (may Allah be pleased with him) that the Messenger of Allah (peace and blessings of Allah be upon him) said: "The heat of your fire is one part out of seventy parts of the heat of the Fire of Hell." It was said, "O Messenger of Allah! The fire of this world would have been sufficient for burning." He (peace and blessings of Allah be upon him) said: "It has been increased by sixty-nine parts, each part as hot as it."

Sayyiduna Usamah (may Allah be pleased with him) says: I heard the Messenger of Allah (peace and blessings of Allah be upon him) say: "On the Day of Resurrection, a man will be brought and he will be thrown into the Fire. Then his intestines will come out in the Fire and he will revolve around them as a donkey revolves around a millstone. Then the people of Hell will gather around him and say, 'O so-and-so! What is the matter with you? Did you not used to enjoin us to do good and forbid us from evil?' He will say, 'Yes, I used to enjoin you to do good but I did not do it myself, and I used to forbid you from evil but I used to do it myself.'"