لِأَبِي عَبْدِ اللَّهِ ع إِنَّا نُخَالِطُ قَوْماً مِنْ أَهْلِ السَّوَادِ وَ غَيْرِهِمْ فَنَبِيعُهُمْ وَ نَرْبَحُ عَلَيْهِمُ الْعَشَرَةَ اثْنَيْ عَشَرَ وَ الْعَشَرَةَ ثَلَاثَةَ عَشَرَ وَ نُؤَخِّرُ ذَلِكَ فِيمَا بَيْنَنَا وَ بَيْنَهُمُ السَّنَةَ وَ نَحْوَهَا فَيَكْتُبُ الرَّجُلُ لَنَا بِهَا عَلَى دَارِهِ أَوْ عَلَى أَرْضِهِ بِذَلِكَ الْمَالِ الَّذِي فِيهِ الْفَضْلُ الَّذِي أَخَذَ مِنَّا شِرًى بِأَنَّهُ قَدْ بَاعَهُ وَ
I said to Abu Abdillah (as): "We deal with some people from the rural areas and others. We sell to them and make a profit - sometimes ten becomes twelve, and sometimes ten becomes thirteen. We allow them to defer payment for a year or so, and they provide us with a written guarantee secured by their house or land for t