عَنْ عَطَاءِ بْنِ يَسَارٍ أَنَّ مُعَاوِيَةَ اشْتَرَى سِقَايَةً مِنْ فِضَّةٍ بِأَقَلَّ مِنْ ثَمَنِهَا أَوْ أَكْثَرَ قَالَ فَقَالَ أَبُو الدَّرْدَاءِ رَضِيَ اللَّهُ عَنْهُ نَهَى رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَآلِهِ وَسَلَّمَ عَنْ مِثْلِ هَذَا إِلَّا مِثْلًا بِمِثْلٍ
Ata bin Yasar says: Sayyiduna Muawiyah (may Allah be pleased with him) bought a silver bowl; the amount of silver given in its price was either less or more than the bowl itself. Sayyiduna Abu Darda (may Allah be pleased with him) said: The Messenger of Allah (peace and blessings be upon him) forbade such transactions, except when it is equal for equal.