"When Kisra is ruined, there will be no Kisra after him, and when Caesar is ruined, there will be no Caesar after him. By the One in Whose Hand is my soul! You shall spend their treasures in Allah's cause."  

قَالَ رَسُولُ اللَّهِ ﷺ إِذَا هَلَكَ كِسْرَى فَلاَ كِسْرَى بَعْدَهُ وَإِذَا هَلَكَ قَيْصَرُ فَلاَ قَيْصَرَ بَعْدَهُ وَالَّذِي نَفْسِي بِيَدِهِ لَتُنْفَقَنَّ كُنُوزُهُمَا فِي سَبِيلِ اللَّهِ