Yahya related to me from Malik from Zayd ibn Aslam that Ata ibn Yasar said, "The Messenger of Allah ﷺ said, 'Dried dates for dried dates is like for like.' It was said to him, 'Your agent in Khaybar takes one sa for two.' The Messenger of Allah ﷺ said, 'all him to me.' So he was called for. The Messenger of Allah ﷺ asked, 'Do you take one sa for two?' He replied, 'Messengerof Allah! Why should they sell me good dates for assorted low quality dates, sa for sa!' The Messenger of Allah ﷺ said, 'Sell the assorted ones for dirhams, and then buy the good ones with those dirhams.' "

حَدَّثَنِي يَحْيَى، عَنْ مَالِكٍ، عَنْ زَيْدِ بْنِ أَسْلَمَ، عَنْ عَطَاءِ بْنِ يَسَارٍ، أَنَّهُ قَالَ قَالَ رَسُولُ اللَّهِ ﷺ " التَّمْرُ بِالتَّمْرِ مِثْلاً بِمِثْلٍ " . فَقِيلَ لَهُ إِنَّ عَامِلَكَ عَلَى خَيْبَرَ يَأْخُذُ الصَّاعَ بِالصَّاعَيْنِ . فَقَالَ رَسُولُ اللَّهِ ﷺ " ادْعُوهُ لِي " . فَدُعِيَ لَهُ فَقَالَ لَهُ رَسُولُ اللَّهِ ﷺ " أَتَأْخُذُ الصَّاعَ بِالصَّاعَيْنِ " . فَقَالَ يَا رَسُولَ اللَّهِ لاَ يَبِيعُونَنِي الْجَنِيبَ بِالْجَمْعِ صَاعًا بِصَاعٍ . فَقَالَ لَهُ رَسُولُ اللَّهِ ﷺ " بِعِ الْجَمْعَ بِالدَّرَاهِمِ ثُمَّ ابْتَعْ بِالدَّرَاهِمِ جَنِيبًا " .