Derashot Harav
 Bereishis 18:4
 Shemos 13:17; this lengthy Ramban contains numerous fundamental concepts relating to the basic faith of a Jew.
 Bereishis Rabbah 39:1
 Grace After Meals
 Rabbi Yitzchok Meir Alter zt”l, the first Gerrer Rebbe, and a contemporary of the Kotzker Rebbe/