חסידות אויף יחזקאל 1:22

This is similar to what it states,²²Ezekiel 1:22 “And over the heads of the Chayot [angels] there was a firmament similar to ice etc.,” which also refers to the aspect of the encompassing light of Binah (from which the garment of the Chashmal is made, that is, from the aspect of the externality of Binah, as will be explained).