Question (Rav Hamnuna): To where did the Kedushah go?
If a man told a woman 'today you are my wife, tomorrow you are not', does she cease to be his wife without a Get?!
Answer (Rava): You cannot equate monetary Kedushah to intrinsic Kedushah!
Monetary Kedushah can vanish; intrinsic Kedushah cannot.
Objection (Abaye): Also intrinsic Kedushah can vanish!
(Beraisa): If one said 'this ox is an Olah for 30 days. After 30 days, it is a Shelamim', for 30 days it is an Olah; after that, a Shelamim.
This shows that intrinsic Kedushah can vanish!
Answer (Rava): The case is he said that the value of the ox should be for an Olah .
Question: If so, why does the Seifa say 'after 30 days, this ox is an Olah . From now, it is a Shelamim' (his words are fulfilled)?
Granted, if one discusses intrinsic Kedushah and the other discusses monetary Kedushah, the Tana needed to teach both cases.
One might have thought that intrinsic Kedushah cannot vanish, but monetary Kedushah can!
But if both discuss monetary Kedushah, why must two cases be taught?
If a severe Kedushah (an Olah) can vanish, to be replaced by a light Kedushah (a Shelamim), all the more so, a light Kedushah can vanish, to be replaced regarding a severe Kedushah!
Suggestion: This refutes bar Pada, who says that even monetary Kedushah cannot vanish.
Rejection (Rav Papa): No. He can explain the Beraisa to say that had he not said 'It is a Shelamim from now', it would be an Olah after 30 days.
This is like a man who tells a woman 'You will be Mekudeshes to me after 30 days.' The Kidushin takes effect, even if the money is consumed in the meantime.
Objection: This is obvious!
Answer #1: The Chidush is, it takes effect even if in the meantime he wants to retract the Kidushin.
Question: This is like the opinion that she may not retract during the 30 days. According to the opinion that she may retract during the 30 days, how can we answer?
Answer: Even that opinion admits that here he cannot retract, for saying that one will give something to Hekdesh is like handing over to a person (an acquisition).