٩ـ مُحَمَّدُ بْنُ يَحْيَى عَنْ مُحَمَّدِ بْنِ الْحُسَيْنِ عَنْ مُحَمَّدِ بْنِ عَبْدِ الله بْنِ هِلاَلٍ عَنِ الْعَلاَءِ بْنِ رَزِينٍ عَنْ زَيْدٍ الصَّائِغِ قَالَ قُلْتُ لأَبِي عَبْدِ الله (عَلَيْهِ الْسَّلام) إِنِّي كُنْتُ فِي قَرْيَةٍ مِنْ قُرَى خُرَاسَانَ يُقَالُ لَهَا بُخَارَى فَرَأَيْتُ فِيهَا دَرَاهِمَ تُعْمَلُ ثُلُثٌ فِضَّةٌ وَثُلُثٌ مِسٌّ وَثُلُثٌ رَصَاصٌ وَكَانَتْ تَجُوزُ عِنْدَهُمْ وَكُنْتُ أَعْمَلُهَا وَأُنْفِقُهَا قَالَ فَقَالَ أَبُو عَبْدِ الله (عَلَيْهِ الْسَّلام) لاَ بَأْسَ بِذَلِكَ إِذَا كَانَتْ تَجُوزُ عِنْدَهُمْ فَقُلْتُ أَ رَأَيْتَ إِنْ حَالَ عَلَيْهَا الْحَوْلُ وَهِيَ عِنْدِي وَفِيهَا مَا يَجِبُ عَلَيَّ فِيهِ الزَّكَاةُ أُزَكِّيهَا قَالَ نَعَمْ إِنَّمَا هُوَ مَالُكَ قُلْتُ فَإِنْ أَخْرَجْتُهَا إِلَى بَلْدَةٍ لاَ يُنْفَقُ فِيهَا مِثْلُهَا فَبَقِيَتْ عِنْدِي حَتَّى يَحُولَ عَلَيْهَا الْحَوْلُ أُزَكِّيهَا قَالَ إِنْ كُنْتَ تَعْرِفُ أَنَّ فِيهَا مِنَ الْفِضَّةِ الْخَالِصَةِ مَا يَجِبُ عَلَيْكَ فِيهَا الزَّكَاةُ فَزَكِّ مَا كَانَ لَكَ فِيهَا مِنَ الْفِضَّةِ الْخَالِصَةِ وَدَعْ مَا سِوَى ذَلِكَ مِنَ الْخَبِيثِ قُلْتُ وَإِنْ كُنْتُ لاَ أَعْلَمُ مَا فِيهَا مِنَ الْفِضَّةِ الْخَالِصَةِ إِلاَّ أَنِّي أَعْلَمُ أَنَّ فِيهَا مَا يَجِبُ فِيهِ الزَّكَاةُ قَالَ فَاسْبِكْهَا حَتَّى تَخْلُصَ الْفِضَّةُ وَيَحْتَرِقَ الْخَبِيثُ ثُمَّ يُزَكَّى مَا خَلَصَ مِنَ الْفِضَّةِ لِسَنَةٍ وَاحِدَةٍ. 
9. Muhammad ibn Yahya has narrated from Muhammad ibn al-Husayn from Muhammad ibn ‘Abd Allah ibn Hilal from al-‘Ala’ ibn Razin from Zayd al-Sa‘igh who has said the following: “I once said to abu ‘Abd Allah , that I have been in a town in Khurasan called Bukhara’. I saw dirhams used there had one-third of silver, one-third of copper and one-third of lead and it was lawful among them. I would use and spend them. Abu ‘Abd Allah , said, ‘There is no offence in it if it is lawful among them.’ I then asked, ‘If it remains with me for one year with other goods, is there Zakat on it? He (the Imam) said, ‘Yes, there is Zakat on it; it is of your assets.’ I then asked, ‘If I take it to a town where they are not accepted and used and it remains with me for one whole year. Is there Zakat on it? He (the Imam) said, ‘If you know that there is pure silver in it which amounts to a quantity subject to Zakat, then you must pay Zakat thereof for pure silver therein and leave the rest of dirt.’ I then asked, ‘If I do not know the amount of pure silver in it, however I know that the amount of silver existing is the amount which is subject to Zakat.’ He (the Imam) said, ‘Cast it until silver is pure and dirt is burned, then after passing of one year it becomes subject to Zakat.” 