Language:
كتاب المناقب
61  
Virtues and Merits of the Prophet (pbuh) and his Companions
(25)
Chapter: The signs of Prophethood in Islam
(25)
باب عَلاَمَاتِ النُّبُوَّةِ فِي الإِسْلاَمِ
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 ‏"‏‏.‏
Reference : Sahih al-Bukhari 3619
In-book reference : Book 61, Hadith 126
USC-MSA web (English) reference : Vol. 4, Book 56, Hadith 816
  (deprecated numbering scheme)