Is it permissible to rent out a disused mosque when it is not
    possible to sell it?
Question

                We have a mosque in a kaafir
      country where nobody goes to pray any more. The Muslims who used to live around it have
      moved to other areas or have gone back to their countries. According to the system here,
      we are not allowed to sell it, so is it permissible for us to rent it out to a Muslim
      family?
Praise be to Allah.We put this question to Shaykh Muhammad ibn
    ‘Uthaymeen, who answered as follows:
They have to evaluate the price of the mosque first, and build
    another mosque in another place and take possession of it, then they can do whatever they
    wish.
Questioner:
They say, “At the moment we cannot afford to build another
    mosque, and we cannot sell this mosque, so can we rent it out?” They say, “We
    cannot sell it.”
Shaykh:
Why not?
Questioner:
Because according to the system in that kaafir country, this
    mosque is registered with the city as real estate that cannot be sold.
Shaykh:
If that is the case, then it is OK. They can rent it out and put
    the rent towards the expenses for other mosques.