On the authority of Abu Hamzah Anas bin Malik (may Allah be pleased with him) — the servant of the Messenger of Allah (peace and blessings of Allah be upon him) — that the Prophet (peace and blessings of Allah be upon him) said:
None of you [truly] believes until he loves for his brother that which he loves for himself. [Al-Bukhari] [Muslim]
عَنْ أَبِي حَمْزَةَ أَنَسِ بْنِ مَالِكٍ رَضِيَ اللهُ عَنْهُ خَادِمِ رَسُولِ اللَّهِ صلى الله عليه و سلم عَنْ النَّبِيِّ صلى الله عليه و سلم قَالَ: “لَا يُؤْمِنُ أَحَدُكُمْ حَتَّى يُحِبَّ لِأَخِيهِ مَا يُحِبُّ لِنَفْسِهِ”. رَوَاهُ الْبُخَارِيُّ [رقم:13]، وَمُسْلِمٌ [رقم:45].