(By Rabbi Yair Hoffman for 5TJT.com) It is a little known fact, but Rav Aharon Kotler zt”l did not just learn under the Alter zt”l and Rav Moshe Mordechai Epstein zt”l in Slabodka.  He also learned under Rav Boruch Ber Leibowitz zt”l. The Talmud tells us that there is an obligation to greet one’s Rebbe […]