Abu Muslim al-Khawlani (may Allah have mercy on him) said: I came to the mosque of Damascus and saw a circle in which some elderly men from among the Companions of Muhammad (peace and blessings be upon him) were sitting, and among them was a young man whose eyes looked as if lined with kohl and whose teeth gleamed. Whenever they differed over something, they referred it back to this young man. So I asked the person sitting with me: Who is this? He said: Sayyiduna Mu'adh bin Jabal (may Allah be pleased with him). He said: I heard the Messenger of Allah (peace and blessings be upon him) say: "Those who love one another for the sake of Allah will be upon pulpits of light in the shade of the Throne of the Most Merciful, on the day when there is no shade except His shade."
Hadith Referenceالمعجم الكبير للطبراني / باب الميم / 17303