Sahih al-Bukhari 3619
Narrated Jabir bin Samura:
The Prophet (ﷺ) said, "When Khosrau perishes, there will be no more Khosrau a after him, and when 
Caesar perishes, there will be no more Caesar after him," The Prophet (ﷺ) also said, "You will spend the 
treasures of both of them in Allah's Cause."
حَدَّثَنَا قَبِيصَةُ، حَدَّثَنَا سُفْيَانُ، عَنْ عَبْدِ الْمَلِكِ بْنِ عُمَيْرٍ، عَنْ جَابِرِ بْنِ سَمُرَةَ، رَفَعَهُ قَالَ ‏
"‏ إِذَا هَلَكَ كِسْرَى فَلاَ كِسْرَى بَعْدَهُ ـ وَذَكَرَ وَقَالَ ـ لَتُنْفَقَنَّ كُنُوزُهُمَا فِي سَبِيلِ اللَّهِ ‏"‏‏.‏