“Arise, walk about the land to its length and to its breadth, as to you I will give it” (Genesis 13:17). “Arise, walk about the land” – it is taught: One who walks about a field,45An ownerless field, or one that is being sold to him by another person. whether along its length or its breadth, acquires the field up to the place that he has walked; this in accordance with the statement of Rabbi Eliezer, as Rabbi Eliezer used to say: Walking about [in a field] is an act of acquisition. The Sages say: One does not acquire it until he walks along it to its breadth and its length. Rabbi Yaakov ben Zavdi said: Rabbi Eliezer’s source is: “Arise, walk about the land [to its length and to its breadth].”