حَدَّثَنَا مُسَدَّدٌ، حَدَّثَنَا يَحْيَى، عَنْ ثَوْرٍ، قَالَ حَدَّثَنِي حَبِيبُ بْنُ عُبَيْدٍ، عَنِ الْمِقْدَامِ بْنِ مَعْدِيكَرِبَ، - وَقَدْ كَانَ أَدْرَكَهُ - عَنِ النَّبِيِّ صلى الله عليه وسلم قَالَ ‏"‏ إِذَا أَحَبَّ الرَّجُلُ أَخَاهُ فَلْيُخْبِرْهُ أَنَّهُ يُحِبُّهُ ‏"‏ ‏.‏

Anas b. Malik said

I never saw the Companions of the Messenger of Allah (May peace be upon him) so happy about anything as I saw them happy about this thing. A man said : Messenger of Allah! A man loves another man for the good work which he does, but he himself cannot do like it. The Messenger of Allah (May peace be upon him) said: A man will be with those whom he loves.