Sahih al-Bukhari, Hadith 3121 ⓘ
Narrated Jabir bin Samura: Allah's Messenger said, "When Khosrau is ruined, there will be no Khosrau after him; and when Caesar is ruined, their will be no Caesar after him. By Him in Whose Hands my life is, you will spend their treasures in Allah's Cause."
حَدَّثَنَا إِسْحَاقُ، سَمِعَ جَرِيرًا، عَنْ عَبْدِ الْمَلِكِ، عَنْ جَابِرِ بْنِ سَمُرَةَ ـ رضى الله عنه ـ قَالَ قَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم " إِذَا هَلَكَ كِسْرَى فَلاَ كِسْرَى بَعْدَهُ، وَإِذَا هَلَكَ قَيْصَرُ فَلاَ قَيْصَرَ بَعْدَهُ، وَالَّذِي نَفْسِي بِيَدِهِ، لَتُنْفَقَنَّ كُنُوزُهُمَا فِي سَبِيلِ اللَّهِ " .
also referenced under: Book 57, Hadith 30 (In-Book) & Volume 4, Book 53, Hadith 350 (USC-MSA)