Latest / Short Machshava On The Daf by Rabbi Yechezkel Hartman
Bava Metzia 69: Ribis Via a Third Party
The tremendous Kulah of the Rama, and the explanation of Rav Reuven Margaliyos.
Source Sheet: https://res.cloudinary.com/ouinternal/image/upload/outorah%20pdf/d1s9fvw2vnitkwaemeos.pdf
The skinny
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