Comentario sobre Shabbat 3:3

One cannot give on Shabbat

Introduction This mishnah discusses cooking eggs in ways that might not be considered to really be cooking.

ביצה בצד המיחם – a copper kettle in which they heat up water on top of the fire.

They may not place an egg at the side of a boiler for it to be lightly roasted and one must not break it into a [hot] cloth. And Rabbi Yose permits it. Placing an egg next to a hot boiler will not suffice to really cook the egg, but it can lightly roast it, perhaps like a soft-boiled egg. Similarly, putting the egg into a hot cloth can make it lightly cooked. The first opinion in the mishnah holds that these actions are considered cooking and are therefore prohibited. Rabbi Yose holds that this is not cooking and is hence permitted.

שתתגלגל – that it will roast a bit until it becomes roasted/rounded, that is to say, mixed.

And one may not put it away in hot sand or road dust for it to be roasted. Burying the egg in hot sand or dust will really cook it and hence even Rabbi Yose agrees that it is prohibited.

ולא יפקיענה בסודרין – he should not crack it on wrapping that was warmed by the sun in order that it be roasted by it, for we decreed that derivatives of the sun are because of the derivatives of the heat.

ור"י מתיר – for he holds that we do not make the decree that the derivatives of the sun are because of the derivatives of the heat and the Halakha is not according to Rabbi Yosi.

לא יטמיננה בחול ובאבק דרכים – that were warmed by the power of the sun and in that, Rabbi Yosi did not permit, for he decreed that the sand are because of the hot ashes/embers for since both of them were through putting a dish in a warm place or under covers to keep it warm for the Sabbath (Talmud Shabbat 39a), they will come to say – what is the difference between hot ashes and sand. Alternatively, Rabbi Yosi decreed lest he move the ashes dust from its place lest the sand there will not be removed according to its need, and he will come to move the attached dust and that is a derivative of ploughing.