حَدَّثَنِي عَبْدُ الأَعْلَى بْنُ حَمَّادٍ، حَدَّثَنَا حَمَّادُ بْنُ سَلَمَةَ، عَنْ ثَابِتٍ، عَنْ أَبِي رَافِعٍ، عَنْ أَبِي هُرَيْرَةَ، عَنِ النَّبِيِّ صلى الله عليه وسلم ‏"‏ أَنَّ رَجُلاً زَارَ أَخًا لَهُ فِي قَرْيَةٍ أُخْرَى فَأَرْصَدَ اللَّهُ لَهُ عَلَى مَدْرَجَتِهِ مَلَكًا فَلَمَّا أَتَى عَلَيْهِ قَالَ أَيْنَ تُرِيدُ قَالَ أُرِيدُ أَخًا لِي فِي هَذِهِ الْقَرْيَةِ ‏.‏ قَالَ هَلْ لَكَ عَلَيْهِ مِنْ نِعْمَةٍ تَرُبُّهَا قَالَ لاَ غَيْرَ أَنِّي أَحْبَبْتُهُ فِي اللَّهِ عَزَّ وَجَلَّ ‏.‏ قَالَ فَإِنِّي رَسُولُ اللَّهِ إِلَيْكَ بِأَنَّ اللَّهَ قَدْ أَحَبَّكَ كَمَا أَحْبَبْتَهُ فِيهِ ‏"‏ ‏.‏

Abu Huraira reported Allah's Apostle (PBUH) as saying: A person visited his brother in another town and Allah deputed an Angel to wait for him on his way and when he came to him he said: Where do you intend to go? He said: I intend to go to my brother in this town. He said: Have you done any favour to him (the repayment of which you intend to get)? He said: No, excepting this that I love Mm for the sake of Allah, the Exalted and Glorious. Thereupon he said: I am a meesenger to you from, Allah: (to inform you) that Allah loves you as you love him (for His sake). Translation Not Available

Book Ref: Sahih Muslim Book 45 Hadith 6226
Web Ref:  Sahih Muslim Book 32 Hadith 2567 a