Two [people] who received a field as sharecroppers, or who inherited [it], or who be-came partners [in it], one can say [to the other]: ‘‘You take the wheat that is in such-and-such place, and I [will take] the wheat that is in such-and-such place; you the wine that is in such-and-such place, and I the wine that is in such-and-such place.’’ But he should not say to him: ‘‘You take the wheat and I the barley; you take the wine and I will take the oil.’’