Sahih Muslim | Book 41 | Hadith Number 6977

Narrated by Jabir b. Samura
Jabir b. Samura reported: I heard Allah's Messenger (may peace be upon him) (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 whit (palace). In a version of Qutaiba there is definitely the word "Muslim".