A person may not hire workers on the Sabbath, nor may a person tell his friend to hire workers for him. We may not [go to] await nightfall at the [Sabbath] boundary for the purpose of hiring workers or bringing produce, but one may await nightfall [to enable him] to watch, and bring produce in his hand. Abba Shaul stated a general rule: Whatever I am permitted to instruct [on the Sabbath], I am permitted to await nightfall for it.