Sahih al-Bukhari, Hadith 3619 ⓘ
Narrated Jabir bin Samura: The Prophet 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 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 " .
also referenced under: Book 61, Hadith 126 (In-Book) & Volume 4, Book 56, Hadith 816 (USC-MSA)