On the Other Hand

Rabbi Yisroel Shusterman is left handed. Since mitzvos are usually to be done with the right hand, as a young man, he asked the Rebbe for direction in this matter and about the ramifications of being a lefty. At the time, the Rebbe sent him to the local Rabbinic authority and Rabbi Shusterman all but forgot about the story. Imagine his surprise when the Rebbe made reference to this so many years later. (Early 1970s)