Sahih Muslim Book 45, Hadith 85

Nu'man b. Bashir reported a hadith like this from Allah's Apostle (ﷺ).

Previous Hadith

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.

Sahih Muslim Book 45, Hadith 84
Next Hadith

The believers are like one person; if his head aches, the whole body aches with fever and sleeplessness.

Sahih Muslim Book 45, Hadith 86