Gittin

and he then begins  to drink from it at once. This is the ruling of R. Meir. R. Judah and R. Jose and R. Simeon, however, prohibit [him from doing so].  That [according to R. Judah] we do decide retrospectively where he leaves the choice to others [is shown by the following Mishnah].  For we learnt: 'What is the status of the woman [who has received a conditional Get  from a sick husband] during those days [between the giving of the Get and his death]? R. Judah says that she is a married woman in every respect,'  and yet when the husband dies the Get takes effect.  R. Mesharsheya said further to Raba: There is also R. Simeon who holds that when the man keeps the choice in his own hands we do not decide retrospectively, but when he leaves the choice to others he holds that we do. That according to R. Simeon we do not decide retrospectively when he keeps the choice in his own hands [is shown] by [the teaching] just quoted. That [according to him] where he leaves the choice to others we do so decide is shown by the following [teaching]: [If a man says to a woman], I betroth thee by means of this intercourse  on condition that thy father consents, even if the father does not consent she is betrothed. R. Simeon b. Judah said in the name of R. Simeon that if the father consents she is betrothed,