What is the ruling on the social loan granted by a bank to the employees of an entity, in exchange for the bank benefiting from letters of guarantee provided by companies contracting with the entity, with the bank providing services to the entity without interest?

The company's agreement with the bank to provide services in exchange for employees opening accounts with it is permissible and is not considered a loan that draws benefit, because the benefit is consequential. However, if the bank is usurious (Riba-based), then this falls under aiding in sin and transgression, which is forbidden, unless there are no Islamic banks available, in which case it is permissible to open an account with a Riba-based bank out of necessity.