Ketubot

Everyone who goes out into the war of the House of David writes for his wife a deed of divorce,  for it is written, And to thy brethren shalt thou bring greetings, and take their pledge.  What [is the meaning of], 'and take their pledge'? R. Joseph learnt: Things which are pledged between him and her. Abaye said: We have also learned  [this]:  A MAIDEN IS MARRIED ON THE FOURTH DAY OF THE WEEK. [This implies] only on the fourth day, but not the fifth day.  What is the reason? [Presumably] on account of the cooling of the temper.  Now in which respect [could the cooling of the mind have a bad result]? If with regard to giving her the kethubah,  let him give it to her.  Consequently  [we must say only] with regard to making her forbidden for him;  and [it is a case where] he puts forward a claim.  Is it not that he puts forward the claim of 'an open opening'?  — No, [it is a case where] he puts forward the claim of blood. Rab Judah said [that] Samuel said: If any one says. 'I have found an open opening', he is trusted to cause her to lose her kethubah. Said R. Joseph: What does he  let us hear? We have [already] learned [this]:  He who eats  at his father-in-law's [between the time of betrothal and the time of marriage] in Judaea,  without witnesses, cannot [after the marriage] raise the claim of [the loss of] virginity, because he is alone with her.  In Judaea he cannot raise this claim, but in Galilee  he can raise it. Now in which respect? If to make her forbidden for him, why [should he] not [be able to raise this claim] in Judaea?  Consequently  [we must say it is] to cause her to lose her kethubah;  and [it is in a case] when he raises a claim. Is it not that he raises the claim of 'an open opening'? — No, when he raises the claim of blood.