The ruling on the invalidity of agency if a man appoints his slave as his agent and then frees him, or sells him

Question : Yes. And if he appoints his slave as his agent and then frees him or sells him, the ruling is the same. It is possible that the agency is terminated, because his command to his slave is a use of labor, not an agency in the true sense.

Answer : This possibility is the correct one. Because when he commands his slave and says, "O so-and-so, sell this item," it is not an agency but a use of labor. And because the slave, upon being freed, owns himself, so his master has no command over him.