What is the ruling on an employee utilizing his position for work other than his official duties, and is it permissible for him to accept that?

Question:
I am an employee at one of the contracting companies, a security guard. I mean, on the lines, I guard the excavations, the electrical generators, and the electrical installations, and so on. The company manager asked me to guard his house for three months during the vacation period. Is it permissible for me to receive my salary from the company for three months while I am working at the manager's house guarding it? Okay, thank you. Peace be upon you. Yes, that is all, thank you. Like that.

Answer:
My brother, my brother, you are a guard at a company, so you must commit to the work the company assigned to you for the salary it pays you, and you must not work for anyone else. You perform the work the company entrusted to you, which is guarding the equipment and the company's items. If you wish to leave the company and work for this person, you have the right to do so. You may terminate your contract with the company and make a contract with this man you are talking about. However, abandoning your primary job to go to another job and taking the salary from the company, this is not permissible for you. Yes.