"أَنْبَأَنا مَعْمَرٌ، عَنِ الزُّهْرِىِّ قَالَ: قَدِمَ رَسُولُ اللَّهِ ﷺ الْمَدِينَةَ وَهُمْ يسلفونَ فِى الثِّمَار، فَقَالَ: مَنْ سَلَّف فِى ثَمَرَةٍ فَهُوَ رِبًا، إِلَّا بِكَيْلٍ مَعْلُومٍ إِلَى أَجَلٍ مَعْلُومٍ".
Those who pay in advance for anything must do so for a specified weight and for a definite time.
قَدِمَ النَّبِيُّ ﷺ الْمَدِينَةَ وَهُمْ يُسْلِفُونَ فِي الثِّمَارِ السَّنَةَ وَالسَّنَتَيْنِ فَقَالَ مَنْ أَسْلَفَ فِي تَمْرٍ فَلْيُسْلِفْ فِي كَيْلٍ مَعْلُومٍ وَوَزْنٍ مَعْلُومٍ إِلَى أَجَلٍ مَعْلُومٍ
"When the Prophet ﷺ arrived in Al-Madinah, they were paying in advance for fruits. So he said: 'Whoever pays in advance, then let him pay in advance for known measurements (of dates), and known weights for a specified period of time.'" He said: There are narrations on this topic from Ibn Abi Awfa and 'Abdur-Rahman bin Abza.
قَدِمَ رَسُولُ اللَّهِ ﷺ الْمَدِينَةَ وَهُمْ يُسْلِفُونَ فِي الثَّمَرِ فَقَالَ مَنْ أَسْلَفَ فَلْيُسْلِفْ فِي كَيْلٍ مَعْلُومٍ وَوَزْنٍ مَعْلُومٍ إِلَى أَجَلٍ مَعْلُومٍ قَالَ وَفِي الْبَابِ عَنِ ابْنِ أَبِي أَوْفَى وَعَبْدِ الرَّحْمَنِ بْنِ أَبْزَى
"When the Prophet ﷺ came (to Al-Madinah), they used to pay in advance for dates, two or three years in advance. He said: 'Whoever pays in advance for dates, let him pay for a known amount or a known weight, to be delivered at a known time.’” (Using translation from Ibn Mājah 2280)
قَدِمَ النَّبِيُّ ﷺ الْمَدِينَةَ وَهُمْ يُسَلِّفُونَ فِي التَّمْرِالسَّنَتَيْنِ وَالثَّلاثَ فَقَالَ مَنْ سَلَّفَ فَلْيُسَلِّفْ فِي كَيْلٍ مَعْلُومٍ وَوَزْنٍ مَعْلُومٍ إِلَى أَجَلٍ مَعْلُومٍ
Those who pay in advance for anything must do so for a specified weight and for a definite time. (Using translation from Muslim 1604a)
قَدِمَ النَّبِيُّ ﷺ الْمَدِينَةَ وَهُمْ يُسْلِفُونَ فِي الثَّمَرِ السَّنَةَ وَالسَّنَتَيْنِ وَالثَّلَاثَ فَقَالَ «مَنْ أَسْلَفَ فَلْيُسْلِفْ فِي كَيْلٍ مَعْلُومٍ وَوَزْنٍ مَعْلُومٍ إِلَى أَجْلٍ مَعْلُومٍ»