Arabic (Original)
حَدَّثَنَا عَفَّانُ حَدَّثَنَا عَبْدُ الْوَارِثِ حَدَّثَنَا عَبْدُ اللَّهِ بْنُ أَبِي نَجِيحٍ عَنْ عَبْدِ اللَّهِ بْنِ كَثِيرٍ عَنْ أَبِي الْمِنْهَالِ عَنِ ابْنِ عَبَّاسٍ قَالَ قَدِمَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ وَهُمْ يُسْلِفُونَ فَقَالَ مَنْ أَسْلَفَ فَلَا يُسْلِفْ إِلَّا فِي كَيْلٍ مَعْلُومٍ وَوَزْنٍ مَعْلُومٍ.
English Translation
The Messenger of Allah (peace be upon him) arrived (in Madinah) while they were making advance payments (salam). He said: 'Whoever makes an advance payment, let him do so only in a known measure and a known weight.'