I'm thinking of selling my slaves
Do you actually have slaves?
Yes, and they are just burdens to me
I see. You should not sell your slaves or have slaves at all. You should let your slaves be free instead.
I can't do that. I have them to take care of the house after all.
It can be hard to maintain the house but you should do so yourself or hire labor for it. Maintaining slaves is wrong and is probably illegal in most parts of the world.