Sahih Bukhari – Hadith No : 3662

Narrated Jabir bin Samura: The Prophet said, “When Khosrau perishes, there will be no more Khosrau a after him, and when Caesar perishes, there will be no more Caesar after him,” The Prophet also said, “You will spend the treasures of both of them in Allah’s Cause.”

Hadith In Arabic Text :

حدثنا قبيصة، حدثنا سفيان، عن عبد الملك بن عمير، عن جابر بن سمرة، رفعه قال ‏”‏ إذا هلك كسرى فلا كسرى بعده وذكر وقال لتنفقن كنوزهما في سبيل الله ‏”‏‏.‏

Chapter : Virtues and Merits of the Prophet (pbuh) and his Companions – كتاب المناقب