Abu Huraira and Abu Sa'id al-Khudri (Allah be pleased with them) reported that Messenger of Allah ﷺ deputed a person from Banu 'Adi al-Ansari to collect revenue from Khaibar. He came with a fine quality of dates, whereupon Messenger of Allah ﷺ said to him: Are all the dates of Khaibar like this? He said: Allah's Messenger, it is not so. We buy one sa' of (fine quality of dates) for two sa's out of total output (including even the inferior quality of dates), whereupon Messenger of Allah ﷺ said: Don't do that, but like for like, or sell this (the inferior quality and receive the price) and then buy with the price of that, and that would make up the measure.

حَدَّثَنَا عَبْدُ اللَّهِ بْنُ مَسْلَمَةَ بْنِ قَعْنَبٍ، حَدَّثَنَا سُلَيْمَانُ، - يَعْنِي ابْنَ بِلاَلٍ - عَنْ عَبْدِ الْمَجِيدِ بْنِ سُهَيْلِ بْنِ عَبْدِ الرَّحْمَنِ، أَنَّهُ سَمِعَ سَعِيدَ بْنَ الْمُسَيَّبِ، يُحَدِّثُ أَنَّ أَبَا هُرَيْرَةَ، وَأَبَا سَعِيدٍ حَدَّثَاهُ أَنَّ رَسُولَ اللَّهِ ﷺ بَعَثَ أَخَا بَنِي عَدِيٍّ الأَنْصَارِيَّ فَاسْتَعْمَلَهُ عَلَى خَيْبَرَ فَقَدِمَ بِتَمْرٍ جَنِيبٍ فَقَالَ لَهُ رَسُولُ اللَّهِ ﷺ " أَكُلُّ تَمْرِ خَيْبَرَ هَكَذَا " . قَالَ لاَ وَاللَّهِ يَا رَسُولَ اللَّهِ إِنَّا لَنَشْتَرِي الصَّاعَ بِالصَّاعَيْنِ مِنَ الْجَمْعِ . فَقَالَ رَسُولُ اللَّهِ ﷺ " لاَ تَفْعَلُوا وَلَكِنْ مِثْلاً بِمِثْلٍ أَوْ بِيعُوا هَذَا وَاشْتَرُوا بِثَمَنِهِ مِنْ هَذَا وَكَذَلِكَ الْمِيزَانُ " .