Jabir b. Samura reported: 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".
Sahih Muslim · The Book of Tribulations and Portents of the Last Hour