— R. Amram said: Because the last line cannot be taken as a determining factor. Said R. Nahman to R. Amram: Whence do you [derive] this? [The other] replied to him: Because it was taught, If the [signatures of the] witnesses were removed two lines from the text, [the deed] is invalid; [if only] one line, [it is] valid. Why are two lines different [from one line]? Because one might commit forgery and add [some unauthorised matter]! [In the case of] one line also [might not one] commit forgery and add [some spurious matter]? Must we not then conclude [that] the last line cannot be taken as a determining factor'? This proves it.