What is the ruling on purchasing stolen goods from commercial stores that are sold by rebels to shopkeepers, for the purpose of consumption?

It is permissible to purchase goods found with merchants unless it is known that they are stolen or usurped. This is because the default assumption is that what a person possesses is their property, and doubt does not render it impermissible. However, if it is known that the goods are stolen, then it is not permissible to purchase them. If a person is compelled to buy stolen goods due to the unavailability of a permissible alternative, then it is permissible only to the extent necessary to avert the hardship.