חסידות אויף ישעיהו 63:11

For example, the combination of the first day, “Let there be light-Yehiy Ohr-יהי אור,” which is the aspect of Chessed,¹⁰Genesis 1:3; See Or HaChayim to Zohar Bereishit 46a; Siddur Im Divrei Elokim Chayim, Shaar HaKriyat Shma 76b; Maamarei Admor HaEmtzaee, Devarim Vol. 4, pg. 1,446; Hanachot 5577 pg. 10; Torat Chayim, Bereishit 8c. is the root of the first millennium of Briyah, Yetzirah, and Asiyah, as known regarding the verse, “In six days [HaShem] made etc.,” referring to the six upper days of Zeir Anpin and Nukvah of Atzilut etc., that are called,¹¹Isaiah 63:11; Deuteronomy 32:7; See Zohar III 15a; Maamarei Admor HaEmtzaee, Vayikra Vol. 1, pg. 225; Bamidbar Vol. 2 pg. 366. “Yemei Olam - the days of the world” [in the masculine] and “Yemot Olam - the days of the world” [in the feminine].