And therefore, it the angel appeared to Moses, in a flame of fire from the midst of the bush (Ex. 3:2), from within thorns.
When he approached there to see this activity, the blessed Holy One said to him: (Ex. 3:5)... do not approach here, remove your shoes...
Here He alluded, that he Moses should shed his body, which was ‘a shoe’ (na)’al relative to the other body, in which he became enclothed when he approached.
And there is one who says that it the shoe is his wife. And it is all truth: this opinion and that.