Messenger of Allah ﷺ employed someone as a governor at Khaibar. When the man came to Medina, he brought with him dates called Janib. The Prophet ﷺ asked him, "Are all the dates of Khaibar of this kind?" The man replied, "(No), we exchange two Sa's of bad dates for one Sa of this kind of dates (i.e. Janib), or exchange three Sa's for two." On that, the Prophet ﷺ said, "Don't do so, as it is a kind of usury (Riba) but sell the dates of inferior quality for money, and then buy Janib with the money". The Prophet said the same thing about dates sold by weight. (See Hadith No. 506).  

عَنْ أَبِي سَعِيدٍ الْخُدْرِيِّ وَأَبِي هُرَيْرَةَ ؓ أَنَّ رَسُولَ اللَّهِ ﷺ اسْتَعْمَلَ رَجُلاً عَلَى خَيْبَرَ فَجَاءَهُمْ بِتَمْرٍ جَنِيبٍ فَقَالَ أَكُلُّ تَمْرِ خَيْبَرَ هَكَذَا فَقَالَ إِنَّا لَنَأْخُذُ الصَّاعَ مِنْ هَذَا بِالصَّاعَيْنِ وَالصَّاعَيْنِ بِالثَّلاَثَةِ فَقَالَ لاَ تَفْعَلْ بِعِ الْجَمْعَ بِالدَّرَاهِمِ ثُمَّ ابْتَعْ بِالدَّرَاهِمِ جَنِيبًا وَقَالَ فِي الْمِيزَانِ مِثْلَ ذَلِكَ  

Messenger of Allah ﷺ appointed a man as the ruler of Khaibar who later brought some Janib (i.e. dates of good quality) to the Prophet. On that, Messenger of Allah ﷺ said (to him). "Are all the dates of Khaibar like this?" He said, "No, by Allah, O Messenger of Allah ﷺ! But we take one Sa of these (dates of good quality) for two or three Sa's of other dates (of inferior quality)." On that, Messenger of Allah ﷺ said, "Do not do so, but first sell the inferior quality dates for money and then with that money, buy Janib."  

عَنْ أَبِي سَعِيدٍ الْخُدْرِيِّ وَأَبِي هُرَيْرَةَ ؓ أَنَّ رَسُولَ اللَّهِ ﷺ اسْتَعْمَلَ رَجُلاً عَلَى خَيْبَرَ فَجَاءَهُ بِتَمْرٍ جَنِيبٍ فَقَالَ رَسُولُ اللَّهِ ﷺ كُلُّ تَمْرِ خَيْبَرَ هَكَذَا فَقَالَ لاَ وَاللَّهِ يَا رَسُولَ اللَّهِ إِنَّا لَنَأْخُذُ الصَّاعَ مِنْ هَذَا بِالصَّاعَيْنِ {وَالصَّاعَيْنِ} بِالثَّلاَثَةِ فَقَالَ لاَ تَفْعَلْ بِعِ الْجَمْعَ بِالدَّرَاهِمِ ثُمَّ ابْتَعْ بِالدَّرَاهِمِ جَنِيبًا  

Are all the dates of Khaibar like this? He said: Messenger of Allah, 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.  

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  

Yahya related to me from Malik from Abd al-Hamid ibn Suhayl ibn Abd ar-Rahman ibn Awf from Said ibn al-Musayyab from Abu Said al- Khudri and from Abu Hurayra that the Messenger of Allah ﷺ appointed a man as an agent in Khaybar, and he brought him some excellent dates. The Messenger of Allah ﷺ said to him, "Are all the dates of Khaybar like this?" He said,"No. By Allah, Messenger of Allah! We take a sa of this kind for two sa or two sa for three." The Messenger of Allah ﷺ said, "Do not do that. Sell the assorted ones for dirhams and then buy the good ones with the dirhams."  

أَنَّ رَسُولَ اللَّهِ ﷺ اسْتَعْمَلَ رَجُلاً عَلَى خَيْبَرَ فَجَاءَهُ بِتَمْرٍ جَنِيبٍ فَقَالَ لَهُ رَسُولُ اللَّهِ ﷺ أَكُلُّ تَمْرِ خَيْبَرَ هَكَذَا فَقَالَ لاَ وَاللَّهِ يَا رَسُولَ اللَّهِ إِنَّا لَنَأْخُذُ الصَّاعَ مِنْ هَذَا بِالصَّاعَيْنِ وَالصَّاعَيْنِ بِالثَّلاَثَةِ فَقَالَ رَسُولُ اللَّهِ ﷺ لاَ تَفْعَلْ بِعِ الْجَمْعَ بِالدَّرَاهِمِ ثُمَّ ابْتَعْ بِالدَّرَاهِمِ جَنِيبًا  

Messenger of Allah ﷺ sent the brother of the tribe of Bani Adi Al-Ansari as governor of Khaibar. Then the man returned, bringing Janib (a good kind of date). Messenger of Allah ﷺ asked him, "Are all the dates of Khaibar like that?" He replied, "No, by Allah, O Messenger of Allah ﷺ! We take one Sa' of these (good) dates for two Sas of mixed dates." Messenger of Allah ﷺ then said, "Do not do so. You should either take one Sa of this (kind) for one Sa' of the other; or sell one kind and then buy with its price the other kind (of dates), and you should do the same in weighing." (Using translation from Bukhārī 7350)  

أَنَّ أَبَا سَعِيدٍ الْخُدْرِيَّ وَأَبَا هُرَيْرَةَ حَدَّثَاهُ أَنَّ رَسُولَ اللَّهِ ﷺ بَعَثَ أَخَا بَنِي عَدِيٍّ الْأَنْصَارِيَّ فَاسْتَعْمَلَهُ عَلَى خَيْبَرَ فَقَدِمَ بِتَمْرٍ جَنِيبٍ قَالَ ابْنُ مَسْلَمَةَ يَعْنِي جَيِّدًا فَقَالَ لَهُ رَسُولُ اللَّهِ ﷺ «أَكُلُّ تَمْرِ خَيْبَرَ هَكَذَا؟» قَالَ لَا وَاللَّهِ يَا رَسُولَ اللَّهِ إِنَّا لَنَشْتَرِي الصَّاعَ بِالصَّاعَيْنِ مِنَ الْجَمْعِ فَقَالَ رَسُولُ اللَّهِ ﷺ «لَا تَفْعَلُوا وَلَكِنْ مِثْلًا بِمِثْلٍ أَوْ بِيعُوا هَذَا وَاشْتَرُوا بِثَمَنِهِ مِنْ هَذَا وَكَذَلِكَ الْمِيزَانُ»  

[Machine] That the Messenger of Allah ﷺ sent a brother from the Ansar to lead them to Khaibar, so he brought dates in a bag. The Messenger of Allah ﷺ said to him, "Is it the case that the people of Khaibar eat such dates?" He said, "No, By Allah, O Messenger of Allah, we buy a Sa'a with two Sa'a from Al-Jam'." The Messenger of Allah ﷺ said, "Do not do that, but sell this and buy with its price from that." And that is how the scale works.  

أَنَّ رَسُولَ اللهِ ﷺ بَعَثَ أَخَا بَنِي عَدِيٍّ الْأَنْصَارِيِّ فَاسْتَعْمَلَهُ عَلَى خَيْبَرَ فَقَدِمَ بِتَمْرٍ جَنِيبٍ فَقَالَ لَهُ رَسُولُ اللهِ ﷺ أَكُلُّ تَمْرِ خَيْبَرَ هَكَذَا؟ قَالَ لَا وَاللهِ يَا رَسُولَ اللهِ إِنَّمَا نَشْتَرِي الصَّاعَ بِالصَّاعَيْنِ مِنَ الْجَمْعِ فَقَالَ رَسُولُ اللهِ ﷺ لَا تَفْعَلُوا وَلَكِنْ مِثْلًا بِمِثْلٍ أَوْ تَبِيعُوا هَذَا وَاشْتَرُوا بِثَمَنِهِ مِنْ هَذَا وَكَذَلِكَ الْمِيزَانُ