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 compete with one another, then you will envy one another, then you will turn your backs on one another, then you will hate one another, or something like that. Then you will go to the poor among the Muhajirun and appoint some of them as leaders of others.”

حَدَّثَنَا عَمْرُو بْنُ سَوَّادٍ الْمِصْرِيُّ، أَخْبَرَنِي عَبْدُ اللَّهِ بْنُ وَهْبٍ، أَنْبَأَنَا عَمْرُو بْنُ الْحَارِثِ، أَنَّ بَكْرَ بْنَ سَوَادَةَ، حَدَّثَهُ أَنَّ يَزِيدَ بْنَ رَبَاحٍ حَدَّثَهُ عَنْ عَبْدِ اللَّهِ بْنِ عَمْرِو بْنِ الْعَاصِ، عَنْ رَسُولِ اللَّهِ ـ ﷺ ـ أَنَّهُ قَالَ " إِذَا فُتِحَتْ عَلَيْكُمْ خَزَائِنُ فَارِسَ وَالرُّومِ أَىُّ قَوْمٍ أَنْتُمْ " . قَالَ عَبْدُ الرَّحْمَنِ بْنُ عَوْفٍ نَقُولُ كَمَا أَمَرَنَا اللَّهُ . قَالَ رَسُولُ اللَّهِ ـ ﷺ ـ " أَوْ غَيْرَ ذَلِكَ تَتَنَافَسُونَ ثُمَّ تَتَحَاسَدُونَ ثُمَّ تَتَدَابَرُونَ ثُمَّ تَتَبَاغَضُونَ أَوْ نَحْوَ ذَلِكَ ثُمَّ تَنْطَلِقُونَ فِي مَسَاكِينِ الْمُهَاجِرِينَ فَتَجْعَلُونَ بَعْضَهُمْ عَلَى رِقَابِ بَعْضٍ " .