[Machine] The Messenger of Allah ﷺ said, "Gold is to be exchanged for gold, silver for silver, wheat for wheat, barley for barley, dates for dates, and salt for salt – like for like. Whoever gives more or takes more has committed usury." It was asked, "O Messenger of Allah ﷺ, if someone buys dates with wheat, but they will not take it except with an increase, what should he do?" The Prophet ﷺ said, "Do not do it."  

قَالَ رَسُولُ اللهِ ﷺ «الذَّهَبُ بِالذَّهَبِ وَالْفِضَّةُ بِالْفِضَّةِ وَالْحِنْطَةُ بِالْحِنْطَةِ وَالشَّعِيرُ بِالشَّعِيرِ وَالتَّمْرُ بِالتَّمْرِ وَالْمِلْحُ بِالْمِلْحِ مِثْلًا بِمِثْلٍ فَمَنْ زَادَ أَوِ ازْدَادَ فَقَدْ أَرْبَى» فَقِيلَ يَا رَسُولَ اللهِ ﷺ فَإِنَّ صَاحِبَ تَمْرِكَ يَشْتَرِي صَاعًا بِصَاعَيْنِ فَأَرْسَلَ إِلَيْهِ فَقَالَ يَا رَسُولَ اللهِ تَمْرِي كَذَا وَكَذَا فَلَا يَأْخُذُوهُ إِلَّا أَنْ أَزِيدَهُمْ فَقَالَ النَّبِيُّ ﷺ «لَا تَفْعَلْ»