עירובין ח׳:א׳ - ח׳:ב׳

כיצד. לכל מי שילך לבית האבל וכו' – that these are matters [pertaining to] a Mitzvah, and we hold that one does not make a joining of borders/עירובי תחומין other than for a Mitzvah.

וכל מי שקבל עליו – to rely upon this Eruv, it is permitted.

ומשחשיכה אסור – and these words [apply] when they didn’t inform him while it was still daylight [on Friday before Shabbat], but if he informed him while it was still daylight [on Friday], even if he hadn’t accepted upon himself to rely upon this Eruv for certain, other than once it became dark, it is permitted.

מזון שתי סעודות לכל אחד – because he acquires his Sabbath camp/place to be the center of Sabbath movements there, he needs to leave there some food that he needs for Shabbat.

אלו ואלו מתכוונים להקל – Rabbi Meir holds that on Shabbat a person eats more because it is the basis of his cooking (which is why he preferred as his standard the food that he consumes on a weekday). But Rabbi Yehuda holds that since on Shabbat he eats three meals, he doesn’t eat a great deal at each meal, but the two meals of a weekday is more than two meals of the Sabbath [day].

ככר בפונדיון – a loaf that is purchased for a Pundiyon (equal to 16 perutot/pennies or 2 Issar) – when they sell four S’ah of wheat to a Sela, and four S’ah are twenty-four Kabin, and the Sela is twenty-four M’ah, it is found that it is a Kab for each M’ah and the M’ah is two Pundiyon, behold that a loaf that is sold in the marketplace for a Pundiyon which is one-half of a Kab, and the storekeeper buys half for the cost of the baking and the milling, it is found that the loaf that is purchased from the storekeeper for a Pundiyon is one-quarter of a Kab which is six eggs, for the Kab is twenty-four eggs in volume, and they are the measurement of two meals of the Eruv according to Rabbi Yohanan ben Berokah. And the Halakha is according to him.

רבי שמעון – [he] reduces the requisite measure and states that it is enough to make an Eruv with two-thirds of a loaf of the size of three loaves to the Kab. And a complete loaf [of bread] of eight eggs is one-third of a Kab. But two-thirds of it which are five eggs and more (i.e., one-third) is for two meals.

חציה לבית המנוגע – this [section] is an anonymous Mishnah, and this is what he said: Half of a full loaf [of bread] that they estimated/measured whether according to the one (Rabbi Yohanan ben Beroka) or the other (Rabbi Shimon), is the measurement for a delay/pause in a leprous house, for a person who enters into a house where there is within it the plague of leprosy, even though becomes immediately ritually defiled, he does not require the washing of his clothes until he waits in order to eat, and this half-loaf [of bread] is in order that he can eat. But for Rabbi Yohanan ben Beroka who stated that a full loaf which is a quarter of a Kab – being the volume of six eggs, it is found that half of that is three eggs, and it this is a piece/certain quantity of bread [or half a loaf] (see Tractate Negaim, Chapter 13, Mishnah 9), that is in the entire Talmud. But for Rabbi Shimon who stated that a full loaf [of bread] is one-third of a Kab, which is eight eggs, that half is four eggs, and this is a piece of bread/half a loaf in all of the Talmud according to Rabbi Shimon. But even though that Rabbi Shimon holds that in a full loaf [of bread] are three meals, for the two-thirds that Rabbi Shimon mentions – is for two meals, these words concern an Eruv that they intended for it, to be lenient, and there is no need for two complete meals. But in all the rest of the places, Rabbi Shimon thinks that a meal is not less than one-half of a loaf of one-third of a Kab, and we require that he wait/delay [the time it takes] in order that he can eat this half-loaf which is four eggs.

חצי חציה לפסול את הגויה – that the person who consumes impure foods equivalent to one-half of a piece of bread, his body is defiled according to the Rabbis from eating heave-offering/Terumah (if he is a Kohen). And half of a piece of bread is an egg-and-a-half [in volume] according to Rabbi Yohanan ben Beroka and two eggs [in volume] according to Rabbi Shimon.