Zohar 2:215b

Jewish Mysticism
Prayer is the adornment of adornments that are adorned as one, and they are four. The first adornment is the adornment of oneself to be perfected. The second adornment is the adornment of this world. The third adornment is the adornment of the world above with all of its heavenly hosts. The fourth adornment is the holy name, in the mystery of the holy chariots, and in the mystery of all the worlds above and below.

Translated by Hartley Lachter