My manager has allowed it as he is also taking money from me actually my manager has agreed himself to do that job on my behalf so what is the ruling about that now. but My job is government job and I m a government

Since it’s a government job and not private, you cannot let the manager do the job on your behalf. It has to come from the government policy. Otherwise it is still haram and he cannot do it for you since he doesn’t own the company. There are many people out there who will need the job for their livelihood.