Is it permissible to use donation funds designated for purchasing land and building a permanent mosque to buy containers for establishing a temporary prayer area, especially since these funds were collected with a specific intention, and is it possible to raise a separate amount for the containers without affecting the funds allocated for the permanent mosque?

It is not permissible to spend funds collected for purchasing land and building a mosque on it, on purchasing containers to be used as a temporary prayer area, except with the permission of the donors. However, if there is complete inability to purchase the land and no possibility of communicating with the donors, then it is permissible to spend these funds on purchasing the containers or paying rent for the prayer area.