Likutei Moharan, Part II 83:4/ליקוטי מוהר"ן·תנינא פ״ג:ד׳

14. This takhlit is the essence of physical space—i.e., the Place of the world. For this takhlit is what encircles the entire world, which was created with wisdom, as it is written, “You created them all with wisdom” (Psalms 104:24). This is also the concept of one who sets a place for his prayer (Berakhot 6b). For that is the essence of physical space, as in, “no man shall go out of His Place on the seventh day” (Exodus 16:29).