What is the prayer method for a young man residing in a foreign country without documentation, and is it permissible for him to shorten and combine prayers, and what is the ruling on Friday prayer for him, and is shortening (prayers) obligatory or optional?

If a traveler intends to stay in a country for four days or more, it is not permissible for him to shorten (qasr) or combine (jam') prayers. Rather, he must complete the prayers and attend the Friday prayer. He is obligated by all that is required of a resident.