see the Rambam makes a difference between mashon (pledge) and pikadon (deposit). If he denies a pikadon (deposited object), it is robbery and requires a sacrifice and repayment --i.e. the oath, "It is not in my possession" is required from the Torah.. But for denial of a pledge (for a loan), the keeper is obligated only when the pledge was specifically set aside for that loan. See Rambam Laws of Robbery and Loss chapter 3 law 14. This relates to what I was writing that an oath that is required only derabanan (from the words of the scribes) is not required by the opposite party to agree with. Rav Shach points out that in fact Rashi in Bava Metzia page 48 in fact explains that subject differently than the Rambam.------------------I see the רמב''ם makes a difference between משכון and פיקדון. If he denies a פיקדון (deposited object), it is robbery and requires a sacrifice and repayment --i.e., the oath, "It is not in my possession" is required from the דאורייתא. But for denial of a pledge (for a loan), the keeper is obligated only when the pledge was specifically set aside for that loan. See רמב''ם הלכות גזלה ואבדה chapter ג' law י''ד. This relates to what I was writing that an oath that is required only דרבנן (from the words of the scribes) is not required by the opposite party to agree with. רב שך points out that in fact רש''י in בבא מציעא דף מ''ח explains that subject differently than the רמב''ם. (This not is after I wrote the previous blog entry. This is after I found Rav Shach's chapter in the Avi Ezri on what looks like tome to be relevant to the statement of Rav Huna that the lender takes an oath, "it is not in my domain.")--but I spent the entire day yesterday in the hospital getting chemicals pumped into me and for a long time I have not been able to do the learning -It has been my hope to convince and influence others about the important of bekiut and iyun and that others will come after me to learn the books of the great roshei yeshivot, Rav Shach, Reb Issar Zalman Meltzer, Reb Nachum of the Mir, Reb Aaron Kotler and Rav Shmuel Rozovski of Ponovitch. I think the ideas of Reb Moshe Feinstein on Shas are probably important also (in the Dibrot Moshe), but I have not that sefer in the local beit midrash of the Litvaks.