Narrated Fadala bin 'Ubaid (RA): I bought a necklace for twelve Dinars at the battle of Khaibar and it contained gold and gems. I considered them separately and found that it was worth more than twelve Dinars. I told the Prophet ( صلی اللہ علیہ وسلم ) about that and he said, "It must not be sold till the contents are considered separately." [Reported by Muslim] .