Mishkat al-Masabih 11 Business Transactions كتاب البيوع 56

وَعَنْ فَضَالَةَ بْنِ أَبِي عُبَيْدٍ قَالَ: اشْتَرَيْتُ يَوْمَ خَيْبَرَ قِلَادَةً بِاثْنَيْ عَشَرَ دِينَارًا فِيهَا ذَهَبٌ وَخَرَزٌ فَفَصَّلْتُهَا فَوَجَدْتُ فِيهَا أَكْثَرَ مِنَ اثْنَيْ عَشَرَ دِينَارًا فَذَكَرْتُ ذَلِكَ لِلنَّبِيِّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ فَقَالَ: «لَا تُبَاعُ حَتَّى تُفصَّلَ» . رَوَاهُ مُسلم

Fadala b. ‘Ubaid* said that at the battle for Khaibar he had bought a necklace in which there were gold and gems for twelve dinars, and after considering them separately he found that it was worth more than twelve dinars, so he mentioned that to the Prophet who said, “It must not be sold till the contents are considered separately.” Muslim transmitted it. * The Damascus edition, iii, 308 and Mirqat , iii, 311 wrongly give Abu ‘Ubaid, but in the commentary Mirqat gives the name correctly as Fadala b. ‘Ubaid.