قَالَ مَالِك : وَلَوْ أَنَّهُ بَاعَهُ ذَلِكَ الْمِثْقَالَ مُفْرَدًا لَيْسَ مَعَهُ غَيْرُهُ لَمْ يَأْخُذْهُ بِعُشْرِ الثَّمَنِ الَّذِي أَخَذَهُ بِهِ، لِأَنْ يُجَوِّزَ لَهُ الْبَيْعَ، فَذَلِكَ الذَّرِيعَةُ إِلَى إِحْلَالِ الْحَرَامِ وَالْأَمْرُ الْمَنْهِيُّ عَنْهُ . قَالَ مَالِك فِي الرَّجُلِ يُرَاطِلُ الرَّجُلَ، وَيُعْطِيهِ الذَّهَبَ الْعُتُقَ الْجِيَادَ وَيَجْعَلُ مَعَهَا تِبْرًا ذَهَبًا غَيْرَ جَيِّدَةٍ، وَيَأْخُذُ مِنْ صَاحِبِهِ ذَهَبًا كُوفِيَّةً مُقَطَّعَةً، وَتِلْكَ الْكُوفِيَّةُ مَكْرُوهَةٌ عِنْدَ النَّاسِ، فَيَتَبَايَعَانِ ذَلِكَ مِثْلًا بِمِثْلٍ : إِنَّ ذَلِكَ لَا يَصْلُحُ .
Imam Malik, may Allah have mercy on him, said that whoever sells gold for gold by weight, or silver for silver, and the gold on one side is one mithqal more, and in exchange for it the other person gives silver or something else and takes the gold, then this is not permissible, because this is a means to usury. Because if that much gold was separate, he would never give it in exchange for silver; here it is given only so that the sale may become valid.