Class nine. Page 60. Introduction, When we give to the Rebbe we get rich, it is really the Rebbe’s own that we are giving him. Story of the Alter Rebbe about this idea.
Class Ten. Page 60-1. Even when the Rabbeiim needed no one for gashmiyus support they were the לית לי’ מגרמי’ כלום who needed to be enriched by their Chassidim. This created the connection between the Rebbe and the Chassidim.
Class Eleven. Page 61- 3. Even when the Rabbeiim were materially self sufficient, the idea of taking and being enriched from the Chassidim was important for the sake of the bond.