The ruling on purchasing goods that contain forbidden substances

Question:
Or is it permissible to purchase products that are displayed for sale, such as fuel and general packaging in the markets?

Answer:
Permissible goods are those about which there is no doubt; there is no harm in them. Permissible goods are those about which there is no doubt. As for goods in which it is feared that forbidden substances are included, or goods in which it is confirmed that forbidden substances are included, these are not permissible, whether from the Rafidah or from anyone else. Goods in which forbidden substances are included are not permissible, whether from the Rafidah or from anyone else. As for goods that do not contain forbidden substances, they are permissible from the Rafidah, just as they are from anyone else.