"your neighbor": but not a gentile. "your neighbor": but not the Temple.
"you may eat," but not suck (out the wine and discard the rest, [for this would result in his eating a greater number of grapes]).
"grapes": and not figs — whence it was ruled: If he were working with (i.e., picking) grapes, he should not eat figs; if he were working with figs, he should not eat grapes. But he should restrain himself until he reaches the choice ones (and then eat).
R. Elazar b. Chasma says: Whence is it derived that a worker may not eat more than his wage? From "so as to sate your soul." And the sages say: "so as to sate," which implies that a worker may eat even more than his wage.