(17) باب الدَّلِيلِ عَلَى أَنَّ مِنْ خِصَالِ الإِيمَانِ أَنْ يُحِبَّ لأَخِيهِ الْمُسْلِمِ مَا يُحِبُّ لِنَفْسِه مِنَ الْخَيْرِ
It is narrated on the authority of Anas that the Prophet (may peace blessings be upon him) observed:
By Him in whose Hand is my life, no, bondsman (truly) believes till he likes for his neighbour, or he (the Holy Prophet) said: for his brother, whatever he likes for himself.
Reference: Sahih Muslim 45 b
In-book reference: Book 1, Hadith 78
USC-MSA web (English) reference(deprecated numbering scheme): Book 1, Hadith 73