Sayyiduna Mu'adh bin Jabal (may Allah be pleased with him) said: I heard the Prophet (peace and blessings be upon him) say: "Those who love one another for the sake of Allah's majesty will be in the shade of Allah, on the day when there is no shade except His shade."
Hadith Referenceالمعجم الكبير للطبراني / باب الميم / 17284