Explanation

The meaning in a few plain lines

Allah, the Almighty, will call out to the people at the place of the standing on the Day of Judgment, saying: "Where are those who loved each other for My glory?" He will ask about them despite the fact that He knows where they are and everything else about them. He will declare their virtue at that time and place, to show His greatness. It means, where are those who loved each other for My glory and grandeur and not for any worldly purpose. Then, Allah, the Almighty, will say: "Today, I will shelter them under My shade." The relation of "shade" to Allah is that of honor. What is meant is the shade of the Throne. According to a version other than that in Sahīh Muslim: "besides the shade of My Throne." "On the Day wherein there is no shade but My shade." i.e. on that day, there will be no shade but that of the Throne of the Most Merciful.