One who is better than I informed me, and he was Abu Qatada, and in the hadith transmitted on the authority of Khalid instead of the word 'bu'us' there is 'wayys' or 'ya wayys', i.e., " how sad it is".
This tribe of the Quraish would kill (people) of my Ummah. They (the Companions) said: What do you command us to do (in such a situation)? Thereupon he said: Would that the people remain aside from them (and not besmear their hands with the blood of the Muslim). This hadith has been narrated on the authority of Shu'ba with the same chain of transmitters.
Kisra (Khusrau king of Persia) would die and Qaisar (Ceasar King of Rome) would die; there would be no Qaisar after him, but, by the One in Whose Hand is my life, you would spend their treasures in the cause of Allah. This hadith has been transmitted on the authority of Zuhri.
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.
I heard Allah's Messenger (ﷺ) as saying: There would lie open for a group of Muslims, or for a group of believers, the treasures of the family of Kisra which would be in the white (palace). In a version of Qutaiba there is definitely the word "Muslim".