To the adults (after Mincha) the Rebbe explains the meaning of what he said to the children that dedication to Torah brings material wealth also. Rabbi Akiva’s wealth is hard to explain as he did not inherit it (spiritually). Yet he was rich through his own efforts and it resulted in the idea that all of Torah SheBaal Peh is his! Which makes him richer than rich! Gashmiyus that supports Ruchniyus. Page 151-3.
