٣- مُحَمَّدُ بْنُ يَحْيَى عَنْ أَحْمَدَ بْنِ مُحَمَّدٍ عَنِ ابْنِ فَضَّالٍ قَالَ سَمِعْتُ رَجُلا يَسْأَلُ أَبَا الْحَسَنِ الرِّضَا (عَلَيْهِ السَّلام) فَقَالَ إِنِّي أُعَالِجُ الدَّقِيقَ وَأَبِيعُهُ وَالنَّاسُ يَقُولُونَ لا يَنْبَغِي فَقَالَ لَهُ الرِّضَا (عَلَيْهِ السَّلام) وَمَا بَأْسُهُ كُلُّ شَيْ‏ءٍ مِمَّا يُبَاعُ إِذَا اتَّقَى اللهَ فِيهِ الْعَبْدُ فَلا بَأْسَ.
3. Muhammad ibn Yahya has narrated from Ahmad ibn Muhammad from ibn Faddal who has said the following: “I heard a man asking abu al-Hassan, al-Rida , saying, ‘I prepare (special kind of flour) and sell it but people say that it should not be done.’ Al-Rida , said to him, ‘What is wrong with it? There is no offense in selling things in which a servant maintains piety before Allah.’” 