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].
[رَوَاهُ الْبُخَارِيُّ]
، [وَمُسْلِمٌ]
Reference : 40 Hadith Nawawi 13
English translation : Hadith 13