(14) باب ثَوَابِ الْمُؤْمِنِ فِيمَا يُصِيبُهُ مِنْ مَرَضٍ أَوْ حُزْنٍ أَوْ نَحْوِ ذَلِكَ حَتَّى الشَّوْكَةِ يُش
Jabir b. Abdullah reported that Allah's Messenger (ﷺ) visited Umm Sa'ib or Umm Musayyib and said:
Umm Sa'ib or Umm Musayyib. why is it that you are shivering? She said:" It is fever and may it not be blessed by Allah, whereupon he (the Holy Prophet) said: Don't curse fever for it expiates the sin of the children of Adam just as furnace removes the alloy of iron.
Reference: Sahih Muslim 2575
In-book reference: Book 45, Hadith 68
USC-MSA web (English) reference(deprecated numbering scheme): Book 32, Hadith 6244