016 – Cheshvan 16 - Igeres HaKodesh, Chapter 27 – ט"ז חשון – אגרת הקודש פרק כ"ז

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

This shiur explains the Alter Rebbe's teaching that after a tzaddik's passing a hidden illumination from his soul continues to reach his disciples, arousing them to teshuvah and good deeds — "growths of growths" — like the sun's light working unseen beneath the earth.

https://www.torahrecordings.com/tanya/regularyear/002/016