The Ma’amer Mordechai is the seminal volume of classical commentary of the Nadvorna Chassidic dynasty.  The volume contains short Torah thoughts of the Rebbe R’ Mordechai’s vertlach that were formulated and conveyed with relevance to followers who lived, largely, in poor villages throughout eastern foothills of the Carpathian Mountains and the northwest Mamaroush region in the mid- to late 1800s.