Question: Who is the tanna who holds that if the prohibition of "lo yeraeh lecha'' - "it may not be seen in your possession'' was transgressed, the prohibition (lo sa'aseh) applies even after Pesach?

Answer: It is R' Yehudah, as the Beraisa teaches,

R' Yehudah says that one who eats Chametz after the 6th hour or Chametz that was owned by a Jew during Pesach both entail a negative commandment that does not involve the punishment of kares.

R' Shimon says that if there is no kares, there is no negative commandment.

R' Shimon agrees that there is, however, a prohibition.

Question: (According to R' Shimon) is the prohibition Rabbinic or from the Torah?

Answer: R' Yirmiyah said that it is from the Torah. R' Yonah and R' Yosa say that it is Rabbinic.

Question: What is R' Yehuda' source? (Shemos 13, 3-4) "..And Chametz may not be eaten...today''. What is the case? If it refers to during Pesach, the verse already states, "you may not eat upon it Chametz''. Rather, if it is not referring to during Pesach, it must be teaching about after Pesach.

Question: What does R' Shimon do with R' Yehuda's verse "and Chametz may not be eaten...today''?

Answer (R' Bun bar Chiya): He explains like R' Yosi HaGalili (Beraisa) "I say that Pesach in Egypt only lasted one day, as the verse states, "and Chametz may not be eaten...today''.