Hazrat Fadala bin Ubaid narrates that during the Battle of Khaybar, a necklace was brought to the Prophet صلی اللہ علیہ وسلم which had gold attached to stones. A man bought it for nine or seven dinars. When he came to the Prophet صلی اللہ علیہ وسلم and explained the whole matter, the Prophet صلی اللہ علیہ وسلم said that it is not permissible for you to buy it until you separate them. He said that his intention was only for the stones. The Prophet صلی اللہ علیہ وسلم said that this sale is not permissible until you separate the two. Then the man returned it, separated them, and then bought it.