Bava Batra

and if there is a surplus  amounting to nine kab it is to be returned. Raba raised [the following] objection against R. Nahman: IF, THEREFORE, THERE WAS A SURPLUS IN THE FIELD OF AN AREA OF NINE KAB. [Does] not [this refer even to the case] where two kor were  sold?  No; [only] when one kor  was sold. [But the Mishnah further stated:] AND IN A GARDEN, AN AREA OF HALF A KAB; [does] not [this refer even to the case] where two se'ah  were sold? — No; [only] where one se'ah was sold. [But the Mishnah also states]: AND, ACCORDING TO R. AKIBA, A QUARTER OF A KAB; [does] not this [refer even to the case] where a se'ah  was sold? — No; [only] when half a se'ah was sold. R. Ashi inquired: What [is the proportion allowed in the case of] a field which was converted  into a garden, or a garden which was converted into a field?  — The matter is undecided. It has been taught: If [the field sold] adjoined [another] field of his,  even if [the surplus  was] ever so little,  the land must be returned.  R. Ashi inquired:  Does a [water] cistern form a division?  [If not,]  does a water canal  form a division? [If not,] does a public road  form a division? Does a nursery of young inoculated palm-trees form a division? — The matter is undecided. NOT ONLY THE QUARTER IS TO BE RETURNED BUT ALL THE SURPLUS. Is not  the order reversed?  Rabin, son of R. Nahman, has taught:  [The Mishnah implies this]: Not only is the surplus  to be returned but [also] all the quarters. MISHNAH. [IF THE SELLER SAYS]. 'I SELL YOU …  MEASURED BY THE ROPE MORE OR LESS', THE [CONDITION OF] 'MORE OR LESS' CANCELS  [THAT OF] 'MEASURED BY THE ROPE'. [IF HE SAYS]. 'MORE OR LESS, MEASURED BY THE ROPE',