Is it permissible for an Islamic institution suffering from a financial crisis to use interest-based earnings from bank accounts for general activities and facilities, such as toilet paper and bathroom cleaning supplies, knowing that these earnings come from the institution's own accounts?

The benefits accrued from the institution's accounts in Riba-based banks should be spent on general Muslim welfare, such as orphanages and hospitals, or on the institution's activities and needs, like purchasing cleaning supplies; this is because the institution's funds are endowed for the benefit of Muslims. It must be noted that it is not permissible to place the institution's funds in Riba-based banks if there are other options available.