Si (el korah) fuera de paja o de cañas, se ve como si estuviera hecho de metal. [R. Yehudah dice esto. La halajá no está de acuerdo con él.] Si estaba torcida, [de modo que un ariaj no pudiera descansar sobre ella (como tampoco podría si fuera redonda)], se ve como si fuera recta. Si fuera redondo, se ve como si fuera cuadrado. Lo que sea tres tefachim en circunferencia es un tefach de ancho. [Es decir, ¿cuál es la medida requerida para una coré redonda? Lo que sea tres tefachim en circunferencia— es decir, lo que sea que requiera un cordón de tres tefachim de largo para rodearlo —si fuera cuadrado, tendría un ancho de tefach. Porque así encontramos con el ñame (el depósito) hecho por Salomón, a saber. (I Reyes 7:23): "E hizo el ñame fundido, diez codos de borde a borde, alrededor de todo ... y una línea de treinta codos lo rodeó".— de donde se ve que por cada codo de ancho en el círculo, hay tres codos de circunferencia.]
Bartenura on Mishnah Eruvin
היתה של קש ושל קנים – Rabbi Yehuda stated this but the Halakha is not according to him.
Ask RabbiBookmarkShareCopy
English Explanation of Mishnah Eruvin
Introduction
This mishnah is a continuation of Rabbi Judah’s words from yesterday’s mishnah. Rabbi Judah held that the cross-beam need not actually be strong enough to support a half-brick.
Ask RabbiBookmarkShareCopy
Bartenura on Mishnah Eruvin
עקומה – the small bricks are not able to rest upon it (when it is curved) and similarly when it is round, a small brick cannot rest upon it.
Ask RabbiBookmarkShareCopy
English Explanation of Mishnah Eruvin
If [the cross-beam] was made of straw or reeds, we look at it as if it was of metal. If the cross-beam was made of a material which could not hold a half-brick, Rabbi Judah considers it nevertheless as if it was strong enough to do so.
Ask RabbiBookmarkShareCopy
Bartenura on Mishnah Eruvin
if it has in its circumference: Which is to say, what is the round measurement required to render [the beam] proper? Anything that has in its circumference three handbreadths, which requires a string of three handbreadths to encircle it around, it is known that it has a width (diameter) of one handbreadth, if you divide [it]. As so do we find with the basin that Shlomo made (II Chronicles 4:2), "ten ells from its edge to its edge and five ells of height and a line of thirty ells encircling it around." Hence for every ell in width (diameter), there are three ells in circumference.
Ask RabbiBookmarkShareCopy
English Explanation of Mishnah Eruvin
[If it was] curved we look at it as if it were straight. If it was curved, it also could not hold a half-brick. Nevertheless, Rabbi Judah holds that it is valid.
Ask RabbiBookmarkShareCopy
English Explanation of Mishnah Eruvin
[If it was] round we look at it as if it were square. Whatever has a circumference of three handbreadths has a diameter of one handbreadth. Again, a round cross-beam could not hold a half-brick. However, it still must be wide enough to hold a one handbreadth half-brick. In order for this to be true, it must have a circumference of three handbreadths (the rabbis knew that pi was roughly three to one, and they knew that this was not exact).
