Silsilah as-Sahihah 275 — Mutual love and affection among believers

It is narrated from Sayyiduna Nu’man bin Bashir (may Allah be pleased with him) that the Messenger of Allah (peace and blessings of Allah be upon him) said: “All Muslims are like a single person. If the eye of a person is ill, the whole body feels the pain, and similarly, if there is a headache, the whole body feels the pain.”