Disposing of unused funds from zakah without notifying the donors
Sometimes Islamic institutions—such as centers, mosques, or charities—ask Muslims to donate for a certain project, and then some of the fund remains after executing the project, or the project is cancelled. What is the ruling regarding the unused funds? Are those in charge of the institution entitled to dispose of it for the good of other public projects without notifying the donors? If they should notify the donors but they cannot do so, what are they to do?