The Messenger of Allah ﷺ said, "There will be no Chosroes after Chosroes, and no Caesar after Caesar. By the One in whose hand my soul rests, their treasures will surely be spent in the cause of Allah."
حدثنا وكيع عن ابن أبي خالد عن زياد مولى بني مخزوم
قال رسول الله ﷺ لا كسرى بعد كسرى ولا قيصر بعد قيصر والذي نفسي بيده لتنفقن كنوزهما في سبيل الله
Its isnad is sahih, it occurred previously at 7472, 2/416 of the printed edition, and this hadith is among his miracles ﷺ, and what he said did indeed come to pass, for he is the truthful one who is believed.