[Machine] I bought a necklace of gold and beads for twelve dinars on the day of Khaybar. Then I examined it and found that the gold in it was worth more than twelve dinars. So I mentioned that to the Messenger of Allah ﷺ , and he said, "Gold should not be sold for gold until it is examined."
اشْتَرَيْتُ يَوْمَ خَيْبَرٍ قِلَادَةَ ذَهَبٍ وَخَرَزٍ بِاثْنَيْ عَشَرَ دِينَارًا فَفَصَّلْتُهَا فَإِذَا فِي ذَهَبِهَا أَكْثَرُ مِنِ اثْنَيْ عَشَرَ دِينَارًا فَذَكَرْتُ ذَلِكَ لِرَسُولِ اللهِ ﷺ فَقَالَ «لَا يُبَاعُ ذَهَبٌ بِذَهَبٍ حَتَّى تُفَصَّلَ»