Hadith on Brotherhood: Believers are a community like one soul

Al-Nu’man ibn Bashir reported: The Messenger of Allah, peace and blessings be upon him, said, “The Muslims are like a single man. If the eye is afflicted, the whole body is afflicted. If the head is afflicted, the whole body is afflicted.

Source: Ṣaḥīḥ Muslim 2586

Grade: Sahih (authentic) according to Muslim

عَنْ النُّعْمَانِ بْنِ بَشِيرٍ قَالَ قَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ الْمُسْلِمُونَ كَرَجُلٍ وَاحِدٍ إِنْ اشْتَكَى عَيْنُهُ اشْتَكَى كُلُّهُ وَإِنْ اشْتَكَى رَأْسُهُ اشْتَكَى كُلُّهُ

2586 صحيح مسلم كتاب البر والصلة والآداب باب تراحم المؤمنين وتعاطفهم وتعاضدهم