´Abu Hurairah narrated that the Messenger of Allah(s.a.w) said:` "When Kisra is ruined, there will be no Kisra after him, and when Caesar is ruined, there will be no Caesar after him. By the One in Whose Hand is my soul! You shall spend their treasures in Allah's cause."
Hadith Referenceسنن ترمذي / كتاب الفتن عن رسول الله صلى الله عليه وسلم / 2216