Anas (may Allah be pleased with him) narrates that the Messenger of Allah (peace and blessings be upon him) said: "By Him in Whose hand is my soul! None of you can be a believer until he loves for his brother what he loves for himself." Agreed upon.
Hadith Referenceمشكوة المصابيح / كتاب الآداب / 4961
Hadith Gradingالألبانی:مُتَّفَقٌ عَلَيْهِ | زبیر علی زئی:متفق عليه
Hadith Takhrij´تحقيق و تخريج: محدث العصر حافظ زبير على زئي رحمه الله` «متفق عليه، رواه البخاري (13) و مسلم (45/72)»