Sahih Muslim 2918
Sahih Muslim · Book 54: The Book of Tribulations and Portents of the Last Hour · The Hour Will Not Begin Until A Man Passes By Another Man's Grave And Wishes That He Was In The Place Of The Deceased, Because Of Calamity
Hammam b. Munabbih reported:
حَدَّثَنَا مُحَمَّدُ بْنُ رَافِعٍ ، حَدَّثَنَا عَبْدُ الرَّزَّاقِ ، حَدَّثَنَا مَعْمَرٌ ، عَنْ هَمَّامِ بْنِ مُنَبِّهٍ ، قَالَ هَذَا مَا حَدَّثَنَا أَبُو هُرَيْرَةَ ، عَنْ رَسُولِ اللَّهِ صلى الله عليه وسلم . فَذَكَرَ أَحَادِيثَ مِنْهَا وَقَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم " هَلَكَ كِسْرَى ثُمَّ لاَ يَكُونُ كِسْرَى بَعْدَهُ وَقَيْصَرُ لَيَهْلِكَنَّ ثُمَّ لاَ يَكُونُ قَيْصَرُ بَعْدَهُ وَلَتُقْسَمَنَّ كُنُوزُهُمَا فِي سَبِيلِ اللَّهِ " .
This is what Abu Huraira reported from Allah's messenger (ﷺ) and in this connection he reported so many hadith (and one of them was this): Allah's Messenger (ﷺ) said: Kisra would die and then there would be no Kisra after him. Qaisar would die and there would be no Qaisar after him, but you will distribute their treasures in the cause of Allah.