Idra Raba: Chapter 35
The fourth of the nine Corrections (formations) of the beard of Zeir Anpin

Rabbi Aba says that this Correction (formation) is splendor and glory, and from it are suspended the vestments in which Zeir Anpin gets dressed, as He is clothed in glory and majesty. These are the Corrections (formations) in which He was dressed and was established in the form of man.