SHAFAQNA – The Grand Ayatollah Khamenei answered a question about leather products.
Question: What is the ruling on selling, buying and using leather products such as shoes, hats, belts which they may come in contact with body and wet clothes?
The Grand Ayatollah Sistani: The existing leather products in Muslims markets or Islamic countries are clean and Halal; and there is no problem in selling, buying and using them; and also if they are made in Islamic country. But if they are for sale from non-Muslim markets and non-Islamic countries, and if you are certain that these products are not clean or Halal, buying, selling and using them is not allowed. And if you do not know whether they are clean and Halal or not, they are adjudged clean, and there is no problem in selling, buying or using them, but it is not correct to perform Salaat with them.