(17) باب تَرَاحُمِ الْمُؤْمِنِينَ وَتَعَاطُفِهِمْ وَتَعَاضُدِهِمْ
Nu'man b. Bashir reported Allah's Messenger (ﷺ) as saying:
The similitude of believers in regard to mutual love, affection, fellow-feeling is that of one body; when any limb of it aches, the whole body aches, because of sleeplessness and fever.
Reference: Sahih Muslim 2586 a
In-book reference: Book 45, Hadith 84
USC-MSA web (English) reference(deprecated numbering scheme): Book 32, Hadith 6258