الإسلام
An-Nu‘mān ibn Bashīr (may Allah be pleased with him) reported that the Prophet (may Allah's peace and blessings be upon him) said: "The believers, in their mutual love, compassion, and sympathy are like a single body; if one of its organs suffers, the whole body will respond to it with sleeplessness and fever."  
عن النعمان بن بشير -رضي الله عنه- مرفوعاً: «مَثَلُ المُؤْمِنِينَ في تَوَادِّهِمْ وتَرَاحُمِهِمْ وتَعَاطُفِهِمْ، مَثَلُ الجَسَدِ إذا اشْتَكَى مِنْهُ عُضْوٌ تَدَاعَى له سَائِرُ الجَسَدِ بالسَّهَرِ والحُمَّى».

شرح الحديث :


The way the believers show mercy to one another, and communicate, and cooperate is similar to the relationship of a body with all its organs. If one organ feels pain, it will call upon the other organs to share the pain, resulting in sleeplessness and fever.  

ترجمة نص هذا الحديث متوفرة باللغات التالية