Rule LR-1.1.11 is intended to restrict bank licensees from undertaking any material non-financial business activities. The Rule does not prevent a bank undertaking commercial activities if these directly arise from their financial business: for instance, in the context of Islamic contracts, such as murabaha, ijara and musharaka, where the bank may hold the physical assets being financed or leased. Nor does it restrict a bank from undertaking commercial activities if, in the judgment of the CBB, they are incidental and do not detract from the financial nature of the bank's operations: for example, a bank may rent out spare office space in its own office building, and provide services associated with the rental (e.g. office security or cleaning).