The masjid does not have any properties through which its affairs could be run. The supervisory board has proposed digging a basement under the roofed section of the masjid in order to build a small factory and facilities for public utilities for the service of the masjid. Is this permissible?
Should a person pay heed to doubts that occur in nāfilah prayers (other than the doubt concerning the number of performed rak‘ahs)? For example, he is unaware whether he has done one prostration or two.