Is it permissible to receive financial entitlements, or what is called "the account," for years of work in the institution after termination of employment, based on a previous fatwa that prohibited taking leave from work to practice another job, even if it was with the president's permission?

The rights known as "end-of-service benefits" are either part of the employee's wage, if explicitly stated in the contract or established by custom, in which case their payment to the employee is obligatory and they have the right to demand them. Or they are a gift from the employer if not stipulated in the contract, neither explicitly nor by custom. In both cases, the employee has the right to take them, but in the second case, they cannot compel the company to provide them.