Sahih Bukhari 3258

Narrated Abu Sa`d: The Prophet said, Delay the (Zuhr) Prayer till it gets cooler, for the severity of heat is from the increase in the heat of Hell (fire). ..

Narrated Abu Huraira: Allah's Apostle said, The (Hell) Fire complained to its Lord saying, 'O my Lord! My different parts eat up each other.' So, He allowed it to take two breaths, one in the winter and the other in summer, and this is the reason..

Narrated Abu Jamra Ad-Dabi: I used to sit with Ibn `Abbas in Mecca. Once I had a fever and he said (to me), Cool your fever with Zamzam water, for Allah's Apostle said: 'It, (the Fever) is from the heat of the (Hell) Fire; so, cool it with water..

Narrated Rafi` bin Khadij: I heard the Prophet saying, Fever is from the heat of the (Hell) Fire; so cool it with water. ..

Narrated Aisha: The Prophet said, Fever is from the heat of the (Hell) Fire, so cool it with water. ..

Narrated Ibn `Umar: The Prophet said, Fever is from the heat of the (Hell) Fire; so abate fever with water. ..