1603. hadíth
وَ رُوِيَ عَنِ اَلْفُضَيْلِ وَ زُرَارَةَ وَ مُحَمَّدِ بْنِ مُسْلِمٍ عَنْ أَبِي جَعْفَرٍ عَلَيْهِ اَلسَّلاَمُ: أَنَّهُمْ سَأَلُوهُ عَنْ شِرَاءِ اَللَّحْمِ مِنَ اَلْأَسْوَاقِ وَ لاَ يُدْرَى مَا يَصْنَعُ اَلْقَصَّابُونَ فَقَالَ "كُلْ إِذَا كَانَ فِي أَسْوَاقِ اَلْمُسْلِمِينَ وَ لاَ تَسْأَلْ عَنْهُ".
And it is narrated from Al-Fudayl, Zurara, and Muhammad ibn Muslim, from Abu Ja'far Imam Muhammad ibn Ali Al-Baqir (a.s): They asked him about buying meat from the markets without knowing what the butchers do. Imam (a.s) said: "Eat if it is in the markets of the Muslims, and do not ask about it."