Does a female employee's departure half an hour or more before the end of official working hours, with her manager's permission, affect the permissibility of the salary she receives for full-time work?

It is permissible for an employee to leave work a little before the end of official working hours if the system allows it and it does not affect the work, or if the authorized manager grants him permission. In such cases, his salary will be lawful. However, if this is not the case, he must remain until the end of working hours. If he leaves before that, he is forbidden from receiving a portion of his salary commensurate with that period.