Bava Batra

If he has other land, the creditor can seize that.  If he has no other land, what advantage has he [from the land remaining in the hands of the purchaser]?  — The rule actually applies to the case where he has no other land, and the reason for it is that the seller is anxious if possible not to be a defaulter.  But when all is said and done, he does become a defaulter in respect of the purchaser? — [The rule is still sound] because he says: It was for this very reason that I sold it to you without a guarantee. Raba [or some say, R. Papa] issued a proclamation: [Know] all you that go up [to Eretz Yisrael] or go down [to Babylon] that if an Israelite sells an ass to a fellow-Israelite and a Gentile comes and forcibly takes it from him,  it is the duty of the first to help him to rescue It.  This, however, only applies if the purchaser cannot recognise the ass as the foal of the seller,  but if he can recognise it as the foal of the ass of the seller, [he need] not [help him].  Further, we only say [that he has this duty] if the non-Jew does not forcibly take the saddle along with the ass,  but if he takes the saddle along with the ass, [we do] not [say so]. Amemar said: Even without all these qualifications he need not help him, because generally speaking the heathen is a grabber,  and so Scripture says of them, Their mouth speaketh vanity and their right hand is a right hand of falsehood. A CRAFTSMAN HAS NO HAZAKAH. Rabbah said: This rule was meant to apply only to the case where the owner delivered the article to the craftsman in the presence of witnesses, but if he delivered it to him without any witnesses being present, since he [the craftsman] is able to plead [without fear of contradiction] that the transaction never took place at all,  if he puts forward [the more probable] plea that he has purchased it [from the claimant],  his plea is accepted.  Said Abaye to him: If that is so,  then even [if he has delivered it to him] in the presence of witnesses, since he is able to plead 'I have returned it to you',  if he only pleads 'I have bought it', his word should certainly be accepted! Rabbah replied: Is it your view