If a guilt offering and a peace offering get mixed up, there is a debate whether or not they can be brought and treated as the more stringent of the two regarding time/place requirements or whether they need to be left to graze so as to not create a situation where we are creating a situation in which holy items that otherwise would not be disqualified can now potentially be disqualified. Rabbi Shimon’s opinion, which allows this, is questioned. Rava thinks that he only allows in if the situation already exists but not lechatchila. Abaya brings several sources to question this assumption of Rava. Rav Yosef questions Abaye – why he didn’t bring another source against Rava.