When is this said? When he did not speak; but [if] one allowed a member of his household, his slave, or his maidservant to separate terumah, [their] terumah is terumah. [If] he nullified [his authorization], if he nullified [it] before [the agent] sepa-rated terumah, [the agent's] terumah is not terumah; but if he nullified [it] after [the agent] separated terumah, [the agent's] terumah is terumah. Laborers do not have authority to separate terumah, except for the treaders, because [the owner] conveys tumah to the vat immediately.