פירוש על שמות 16:33

צנצנת is an earthern flask, as it is translated in the Targum (cf. Mekhilta d'Rabbi Yishmael 16:33).

ויאמר משה אל אהרן, Moses said this to Aaron only after the Sanctuary had been built and inaugurated, i.e. at least about 11 months later. Until then there had not been a Holy Ark.