Related for Bava Batra 211:4
מיתיבי בסימניו ובמצריו פיחת שתות או הותיר שתות הרי הוא כשום הדיינין הגיעו והא שום הדיינין דשתות כיותר משתות הוא
like [that of] more than a sixth. According to R. Huna, [who] said [that the law of] a sixth is like [that of] less than a sixth, [the Tanna of our Mishnah] means to say thus: The sale is valid [in the case where the difference is] less than a sixth as well as [when it is exactly] a sixth.<span class="x" onmousemove="('comment',' Lit., 'a sixth being inclusive'. ');"><sup>7</sup></span> [If it is] more than a sixth deduction is to be made. According to Rab Judah, [who] said [that the law of] a sixth is like [that of] more than a sixth, the Tanna means to say thus: The sale is valid [when the difference is] less than a sixth. [If it is] more than a sixth as well as [when it is exactly] a sixth,<span class="x" onmousemove="('comment',' If less land was given, the difference in price is to be deducted. If more land was given, the surplus of land is to be returned. ');"><sup>4</sup></span> deduction is to be made.<span class="x" onmousemove="('comment',' [H] in our Mishnah, is taken by R. Huna to mean that 'the sale is valid (if the actual area is) less than (a beth kor by) a sixth', and from this it follows that the sale is certainly valid if the difference is less than a sixth; whereas Rab Judah interpreted our Mishnah as follows: 'The sale is valid (if the difference between the actual area and that of a beth kor is) less than a sixth'. Hence it follows that if the difference is a sixth, and certainly if it is more, deduction is to be made. ');"><sup>8</sup></span>