What is the ruling on the salary of a female employee who works for two different companies, one in the morning and one in the evening, after obtaining the approval of the manager of the first company?

Your salary is permissible if the director, owner of the company, or whoever has the authority and approval, agrees to your leaving work in the evenings for teaching. Otherwise, it is not permissible, because it is a betrayal of trust. Allah Almighty says: (O you who have believed, do not betray Allah and the Messenger or betray your trusts while you know [the consequence]). And the Prophet, peace and blessings be upon him, said: "There is no faith for one who has no trustworthiness."