One in the Summer and One in the Winter

Narrated Abu Hurairah (Radi Allaahu anhumma): The Prophet (SalAllaahu alaihe was sallam) said, “In very hot weather delay the Dhur prayer till it becomes (a bit) cooler because the severity of heat is from the raging of the Hellfire.

The fire of Hell complained to its Lord saying: O Lord! My parts are eating (destroying) one another. So Allaah allowed it to take two breaths, one in the winter and the other in the summer. The breath in the summer is at the time when you feel the severest heat and the breath in the winter is at the time when you feel the severest cold.”

[Sahih al Bukhari, The Book of the Times of As-Salat, hadeeth #536&537]