Eruvin 5:1 - 5:2

כיצד מעברין (how do they extend the city limits -for defining the Sabbath limit) – the language of a pregnant woman whose belly protrudes. And this is what he said, how does she have the extension of the city limits? If one house enters, and another house leaves, etc. And when he comes to put up a marker as a sign of the boundary of the city and he comes to measure two-thousand [cubits] outside it. But if hits wall was not part of it but rather the near-by houses and they were connected, and there is a house that enters into the city more than its neighbor, and its entrance appears defective, and there is house that protrudes and goes out side more than its neighbor.

או פגום נכנס פגום יוצא – there are towers protrude in the wall, sometimes they protrude inwards and sometimes outwards.

או שהיו שם – at one of the corners of the city.

גדודיות גבוהות (ruins/debris – ten handbreadths high) – broken parts of the wall of the destroyed homes, and there are within seventy cubits and remnants of the city.

או נפשות (structure next to or over a tomb) – a building that they make on the grave, and it has within them a dwelling house.

מוציאין את המדה כנגדן – if these protrusions are near the northeastern corner, we see as if there is another protrusion corresponding to it on the southwestern corner, and a chord is stretched from one to the other and measures from the chord and outward, in order that the [Sabbath] limit is equivalent to the two corners, and it won’t be long here and short there.

ועושין אותן – the [Sabbath] limits square, so that there should be two-thousand [cubits] to the sides like there is in the middle. But not round, so that there will be two-thousand [cubits] in the middle, and on the sides, they are reduced in the manner of something round.

נותנים קרפף לעיר (for measuring the Sabbath limits, we allow an area of seventy-square cubits outside the town added to the town – for the purpose of the Sabbath limits) – all who come to measure the [Sabbath] limits leaves to the city/town the air-space of seventy cubits and left-overs, which are seventy cubits and two-thirds of a cubit, and from there, he begins to measure two-thousand cubits, as it states (Numbers 35:4): “[The town pasture that you are to assign to the Levites] shall extend a thousand cubits outside the town wall all around,” the Torah stated that one should give outside [the wall] and afterwards measure, meaning to say, give it an area of seventy-square cubits and remnants outside the town added to the town and afterwards measure from there and beyond/further.

לא אמרו קרפף אלא בין שתי עיירות – two towns that are adjacent/near each other, they given seventy cubits and left-overs to each one in order to attach/combine them through these enclosures to become like one city, and a person who comes to walk from one of them [through] its neighbor measures for himself two-thousand cubits from outside its neighbor, because since both of them are like one town/city through these enclosures that connect between them. And the Halakha is according to the Sages, for we don’t place an enclosure for one town/city, but rather only between two towns/cities.