018 – Cheshvan 18 - Igeres HaKodesh, Chapter 28 – י"ח חשון – אגרת הקודש פרק כ"ח

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

This shiur explains the Alter Rebbe's teaching that at the passing of a tzaddik the "eighth mazal," the Supernal Will, is revealed: all his life's toil and avodah shine forth and draw down great kindness that atones even for grave sins — beyond what the offerings achieve.

https://www.torahrecordings.com/tanya/regularyear/002/018