It is narrated from Hazrat Sahl (may Allah be pleased with him) that the Noble Prophet (peace and blessings be upon him) said: The status of a believer among the people of faith is like that of the head in the body, and a believer feels pain for all the people of faith just as one feels pain for a headache.
Hadith Referenceمسند احمد / مسند الأنصار رضي الله عنهم / 22877
Hadith Gradingحکم دارالسلام:صحيح لغيره، وهذا إسناد ضعيف لضعف مصعب بن ثابت، لكنه توبع