Understanding the Concept of פסיק רישיה (P'sik Reisha): When an Allowed Action Causes a Forbidden Result with Two דרבנן. When Is One Allowed to...
Practical applications with "מצוה" in S'char shabbos.
דבר דבר (Dabair Davar): When Making Calculations, It Depends if One Still Owes the Money or Not;