In Jewish mysticism, the Chamber of Guf (or Guph or even Gup) (Hebrew for "boy" or "corpse") also called the Otzar (Hebrew for "treasury") is the Hall of Souls, located in the Seventh Heaven. Every human soul is held to emanate from the Guf. The Talmud teaches that the Messiah will not come until the Guf is emptied of all its souls (Yevamot 62a).