A Precaution
أَبُو عَلِيٍّ الْأَشْعَرِيُّ عَنْ مُحَمَّدِ بْنِ عَبْدِ الْجَبَّارِ عَنْ صَفْوَانَ بْنِ يَحْيَى عَنْ إِسْحَاقَ بْنِ عَمَّارٍ قَالَ سَأَلْتُ أَبَا إِبْرَاهِيمَ ( عليه السلام ) عَنِ الرَّجُلِ يَبِيعُنِي الْوَرِقَ بِالدَّنَانِيرِ وَ أَتَّزِنُ مِنْهُ فَأَزِنُ لَهُ حَتَّى أَفْرُغَ فَلَا يَكُونُ بَيْنِي وَ بَيْنَهُ عَمَلٌ إِلَّا أَنَّ فِي وَرِقِهِ نُفَايَةً وَ زُيُوفاً وَ مَا لَا يَجُوزُ فَيَقُولُ انْتَقِدْهَا وَ رُدَّ نُفَايَتَهَا
Abu Ali Al Ashary, from Muhammad Bin Abdul Jabbar, from Safwan Bin Yahya, from Is’haq Bin Ammar who said,
‘I asked Abu Ibrahim-asws about the man who sold me the silver (Dirhams) with the Dinars, and I weighed from it. So, I weighed for him until I was free, and there was no work between me and him except regarding his silver (Dirhams) were spoilt and weak (coins) and what is not allowed (invalid coins). So, he said, ‘Cash these and return the invalid ones’.
فَقَالَ لَيْسَ بِهِ بَأْسٌ وَ لَكِنْ لَا تُؤَخِّرْ ذَلِكَ أَكْثَرَ مِنْ يَوْمٍ أَوْ يَوْمَيْنِ فَإِنَّمَا هُوَ الصَّرْفُ قُلْتُ فَإِنْ وَجَدْتُ فِي وَرِقِهِ فَضْلًا مِقْدَارَ مَا فِيهَا مِنَ النُّفَايَةِ فَقَالَ هَذَا احْتِيَاطٌ هَذَا أَحَبُّ إِلَيَّ
Imam-asws said: ‘There is no problem with it, but you should not delay that for more than one day or two days, for this, rather is the exchange’. I said, ‘Supposing if he were to find in his silver (dirhams) excess of the measurement of whatever was therein from the invalid (coins)?’ So he-asws said: ‘This is ‘احْتِيَاطٌ ’ a precaution. This is more beloved to me-asws.[1]
[1] Al Kafi – V 5 – The Book of Subsistence Ch 114 H 7