(Rav): According to Rebbi Meir, one who is mekadesh (marries) a woman using Chametz after the 6th hour has not done anything.

Support (Rebbi Huna): This is correct! If one would marry a woman on Pesach using Kortavnian wheat (that grows in the desert which is only Rabbinically considered Chametz since it is inedible) has he done anything at all?! (In both of these cases the prohibition is only Rabbinic.)

Case #1: A person once deposited a sack of pastries with Rebbi Chiya Rabbah. (Rebbi Yosi bar Bun said that the person was called Yochanan Chakukia)[Rebbi Chiya asked Rebbi what to do with the sack]. Rebbi answered that Rebbi Chiya should sell it in Beis Din before the time of biur (destruction of the Chametz).

Case #2: A person once deposited barrels of Kutach (a dairy food containing breadcrumbs) with Rebbi Chiya bar Ashi. He asked Rav what do with it. Rav answered that he should sell it in Beis Din before the time of biur.

Query: What is the time of biur here? (The Mishnah listed 3 different times - the night of the 14th, the morning and before the 6th hour)

Answer #1 (Rebbi Yirmeyah): In the morning.

Answer #2 (Rebbi Ba): The 5th hour, like Rebbi Yehudah.

Support (Rebbi Yosa): Rebbi Yirmeyah is correct. They only allowed them (in cases #1 and #2) to sell the Chametz in order to save the property of the owners - but according to Rebbi Yehudah, in the 5th hour it anyway has no value at all?!

Chevraya (Sages) say the following.

In the 5th hour, according to Rebbi Yehudah, one who is makdish (consecrates his Chametz to the Beis HaMikdash), it is hekdesh (valid).

If one would declare it to be Terumah, it is not Terumah.

Reasoning: It is hekdesh since it has monetary value. It is not Terumah since Terumah is meant to be eaten.

Objection (Rebbi Yosi): Surely it should be the opposite, that it would not become hekdesh but it would become Terumah. It would not become hekdesh, since one cannot redeem hekdesh in order to feed it to dogs (and Chametz cannot be eaten by people). It would become Terumah, since [at this time] the Torah still allows it to be eaten (as it is only the Rabbis who required it to be burned).