In the Jerusalem Talmud, Sanhedrin, chap. 7, we read that, by
the means above mentioned, a Rabbi created pumpkins, melons, and
real deer and roes.

There is a living creature in heaven which by day has "Truth" upon its
forehead, by which the angels know it is day; but in the evening it has
"Faith" on its forehead, whereby the angels know that night is near.
Each time the living creature says, "Bless ye the blessed Lord," all the
hosts above respond, "Blessed be the blessed Lord forever."

THE KABBALA, _Kitzur Sh'lh_, fol. 42. col. 2.