Bulugh al-Maram, Book 16, Hadith 1501 (English)

Anas (RAA) narrated that the Messenger of Allah said: “By Him in Whose Hand my soul is, a slave of Allah does not truly believe till he wishes for his neighbor what he wishes for himself.” Agreed upon.

وَعَنْ أَنَسٍ ‏- رضى الله عنه ‏- عَنْ اَلنَّبِيِّ ‏- صلى الله عليه وسلم ‏-قَالَ: { وَاَلَّذِي نَفْسِي بِيَدِهِ لَا يُؤْمِنُ عَبْدٌ حَتَّى يُحِبَّ لِجَارِهِ ‏- أَوْ لِأَخِيهِ‏- مَا يُحِبُّ لِنَفْسِهِ } مُتَّفَقٌ عَلَيْهِ.‏ (1917)‏.‏ ‏3 ‏- صحيح.‏ رواه البخاري (13)‏، ومسلم (45)‏ (72)‏ واللفظ لمسلم.‏

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also referenced under: Book 16, Hadith 1458 (In-Book)