Sahih Bukhari Volume 1, Book 9, Hadith 537

وَاشْتَكَتِ النَّارُ إِلَى رَبِّهَا فَقَالَتْ يَا رَبِّ أَكَلَ بَعْضِي بَعْضًا‏.‏ فَأَذِنَ لَهَا بِنَفَسَيْنِ نَفَسٍ فِي الشِّتَاءِ، وَنَفَسٍ فِي الصَّيْفِ، فَهُوَ أَشَدُّ مَا تَجِدُونَ مِنَ الْحَرِّ، وَأَشَدُّ مَا تَجِدُونَ مِنَ الزَّمْهَرِيرِ

The Hell-fire of Hell complained to its Lord saying: O Lord! My parts are eating (destroying) one another. So Allah 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."