Sahih al-Bukhari 6629
Sahih al-Bukhari · Book 83: Oaths and Vows · How did the oaths of the Prophet (saws) use to be?
Narrated Jabir bin Samura:
حَدَّثَنَا مُوسَى ، حَدَّثَنَا أَبُو عَوَانَةَ ، عَنْ عَبْدِ الْمَلِكِ ، عَنْ جَابِرِ بْنِ سَمُرَةَ ، عَنِ النَّبِيِّ صلى الله عليه وسلم قَالَ " إِذَا هَلَكَ قَيْصَرُ فَلاَ قَيْصَرَ بَعْدَهُ، وَإِذَا هَلَكَ كِسْرَى فَلاَ كِسْرَى بَعْدَهُ، وَالَّذِي نَفْسِي بِيَدِهِ لَتُنْفَقَنَّ كُنُوزُهُمَا فِي سَبِيلِ اللَّهِ " .
The Prophet (ﷺ) said, "If Caesar is ruined, there will be no Caesar after him; and if Khosrau is ruined, there will be no Khosrau, after him; and, by Him in Whose Hand my soul is, surely you will spend their treasures in Allah's Cause."