Someone whose produce is far away from him must assign them a name. There was an incident involving Rabban Gamliel and the Elders, who were traveling on a ship; Rabban Gamliel declared: “The tenth that I will, in the future, measure out is [hereby] given to Yehoshua, and its place is leased to him; another tenth that I will, in the future, measure out is [hereby] given to Akiva ben Yosef so that he will acquire it on be-half of the poor, and its place is leased to him.” R' Yehoshua said: “The tenth that I intend to measure out is given to Elazar ben Azaryah, and its location is rented to him.” And they received rent from one an-other.