Hadith Qudsi 61
61) Narrated 'Ubada bin As-Samit : I heard Allah's Messenger quoting his Lord .Who said: My love is established for those who love one another for My sake; and My love is established for those who spend money for My sake; and My love is established for those who visit one another for My sake. (In fact) those who love one another for the sake of Allah will be at pulpits of light in the shade of Allah's Throne on a day when there is no shade but His shade.
(This Haditb is sound through all its channels and reported in Musnad Ahmad).