It was narrated from Abdullah bin Amr bin As that the Messenger of Allah ﷺ said: "When the treasures of Persia and Rome are opened for you, what kind of people will you be?" "Abdur-Rahman bin Awf said: "We will say what Allah has commanded us to say." The Messenger of Allah ﷺ said: “Or something other than that. You will complete with one another, then you will envy one another, then you will turn your backs on one another, then you will hate O another, or something like that. Then you will go to the poor among the Muhajirin and appoint some of them as leaders of others.” (sahih)