In memory of my Teacher Rabbi Aharon Walkin Zatzal. Although I spent very little time with him compared to others his impact towards me was very great. When I started with him in 2000-2002 I had asked if I can buy his audio tapes to learn on my own and exclusively put it together in a Sefer. Who would know that these lost tapes of Shiurim will be so priceless and valuable. If you enjoyed this please send all support to his family thank you may G-d Bless!.