The 13th of the 42 hadiths gathered by Imam Yahya ibn Sharaf an-Nawawi in An-Nawawi's Forty Hadith, given below in the original Arabic with an English translation and its reference.
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].<br>[رَوَاهُ الْبُخَارِيُّ] ، [وَمُسْلِمٌ]
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]
Text from the open hadith-api dataset. Hadith numbering follows that edition and can differ slightly from a printed copy — check the Arabic against a trusted mushaf of hadith before relying on a reference.