Reference for Eruvin 117:3
אמר אביי ובלבד שלא ירבה יותר ממדת העיר באלכסונא:
- It is this that was meant: If one surveyor extended the limit and another reduced it, the one whose limit is the greater is to be obeyed. Abaye added: Provided the extended limit<span class="x" onmousemove="('comment',' Where it exceeded the difference between the measurements by a taut and a sagging rope.');"><sup>6</sup></span> does not exceed the lesser one by more than the difference between the diagonal and a side of the town.<span class="x" onmousemove="('comment',' In such a case it is possible to assume that one surveyor erroneously measured the perpendicular from the side while the other properly tka ouenk measured diagonally (v. supra 58b) ; cf. Rashi s.v. and cf. Tosaf. s.v. a.l.');"><sup>7</sup></span>