Hassidout sur Ézéchiel 1:22

וּדְמ֞וּת עַל־רָאשֵׁ֤י הַחַיָּה֙ רָקִ֔יעַ כְּעֵ֖ין הַקֶּ֣רַח הַנּוֹרָ֑א נָט֥וּי עַל־רָאשֵׁיהֶ֖ם מִלְמָֽעְלָה׃

Et sur la tête de la Haïa apparaissait un firmament, comme un cristal immense qui s’étendait au-dessus de leur tête, en haut.

The Gate of Unity

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).