מי דמי?! התם — נעשה בסיס לדבר המותר, הכא — נעשה בסיס לדבר האסור! אלא הכי קאמרי ליה: אם מצילין תיק של ספר עם הספר, ואף על פי שיש בתוכו מעות, לא נטלטל עור אגב בשר?! מי דמי? התם נעשה בסיס לדבר האסור ולדבר המותר, הכא — כולו נעשה בסיס לדבר האסור. אלא הכי קאמרי ליה: אם מביאין תיק שיש בתוכו מעות מעלמא להציל בו ספר תורה, לא נטלטל עור אגב בשר?!
The Talmud asks: Are they comparable? There, with regard to the Torah scroll, the casing is a base for a permitted object, i.e., the scroll itself, which may be moved on Shabbat; whereas here, with regard to the hide of the Paschal lamb, the skin is a base for a prohibited object, i.e., the flesh of the sacrifice, which may not be moved until nightfall because it may not be eaten until night. Rather, this is what they said to him: If one may save the casing of the Torah scroll along with the scroll, even if there is money inside it, why then may one not move the hide together with the flesh? The Talmud asks: Are they comparable? There, with regard to the Torah scroll, the casing becomes a base for a prohibited object and a permitted object; whereas here, with regard to the hide, it is entirely a base for a prohibited object. Rather, this is what they said to him: If one may bring a casing that has money inside it from outside in order to save a Torah scroll in it, why may one not move the hide together with the flesh?
והיא גופה מנלן? אילימא דמדהיכא דאית ביה לא שדי להו, איתויי נמי מייתינן — מי דמי?! התם — אדהכי והכי נפלה דליקה, הכא — אדהכא והכי לישדינהו. אלא אמר מר בר רב אשי: לעולם כדאמרינן מעיקרא. ודקא קשיא לך: הכא טלטול והכא מלאכה — כגון דלא קבעי ליה לעור.
The Talmud asks: And from where do we derive this halakha itself? As it is not stated in the Mishnah, from where do we derive that it is permitted on Shabbat to bring a casing containing money from the outside in order to save a Torah scroll? If you say that from the fact that in a situation where the casing has money in it one does not throw it away but brings it out with the casing, when the casing is outside and has money in it, one may also bring the money along with it; is it comparable? There, with regard to the Torah scroll’s casing with money inside, if one tarries in order to empty the money from the case, in the meantime the fire might catch the Torah scroll and burn it; whereas here, with regard to bringing in the casing, in the meantime he could have thrown it away. Rather, Mar bar Rav Ashi said: Actually, it is as we said initially. The rabbis equated carrying the Torah casing with flaying the hide of the Paschal lamb. And as for what was difficult for you, that here, with regard to the Torah casing, moving alone is involved, whereas here, with regard to a Paschal lamb, a prohibited labor is involved, it can be explained as referring to a case where one does not need the hide of the Paschal lamb. Therefore, he is exempt.