Hawzah News Agency – In an Islamic country a foreign person, whose religion is unknown, sells food items and touches it in the presence of transmitting moisture. Is it obligatory to ask him about his religion, or will the principle of presuming a state of purity apply?

Answer: It is not obligatory to ask about his religion and the principle of presuming state of purity will be applicable in respect to him as well as the food he touches in the presence of transmitting moisture.

Source: https://www.leader.ir/en/book/32/Practical-Laws-of-Islam