[Machine] The Messenger of Allah ﷺ arrived in Medina while they were exchanging fruits for two or three years. The Messenger of Allah ﷺ said, "Exchange fruits based on a known measure and weight." Sufyan used to mention it for a while "until Abdullah ibn Kathir doubted it."  

قَدِمَ رَسُولُ اللَّهِ ﷺ الْمَدِينَةَ وَهُمْ يُسْلِفُونَ فِي الثِّمَارِ فِي سَنَتَيْنِ وَثَلَاثٍ فَقَالَ رَسُولُ اللَّهِ ﷺ «أَسْلِِفُوا فِي الثِّمَارِ فِي كَيْلٍ مَعْلُومٍ وَوَزْنٍ مَعْلُومٍ» وَقَدْ كَانَ سُفْيَانُ يَذْكُرُهُ زَمَانًا «إِلَى أَجَلٍ مَعْلُومٍ ثُمَّ شَكَّكَهُ عَبْدُ اللَّهِ بْنُ كَثِيرٍ»