In drop servicing for example I get a client for website designing for $1000 and get a freelancer to do it for $500 and I am being honest with the client and tell him that I am Website Designing agency and we have some freelancers to do the work and they are completely fine with it but I don’t tell my freelancer about the $500 commision does doing it is haram ? If yes how can I do it in a halal way?