006 – Tishrei 6 - Igeres Hakodesh, Chapter 20 – תשרי ו' — אגרת הקודש פרק כ

From Tanya - regular year - Rabbi Chaim Wolosow by R Chaim Wolosow.

This shiur explores how the first created existence begins with the vessels and lights of Beriah, Yetzirah, and Asiyah, which are derived from the soul-level of Atzilus. It discusses how even in Atzilus, certain aspects are considered 'yesh' (something), including the bodies of angels, which are not completely nullified.

https://www.torahrecordings.com/tanya/regularyear/001/006