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…
Nu'man b. Bashir reported Allah's Messenger (ﷺ) as saying: The believers are like one person; if his head aches, the whole body aches with fever and sleeplessness.
Nu'man b. Bashir reported that Muslims are like one body of a person; if the eye is sore, the whole body aches, and if the head aches, the whole body aches.