Rabbi Eliezer holds that when the Kohen accepts the blood from a sacrifice into a sanctified vessel, there must be enough collected in that single bowl to be used for placing the blood on the altar. If one collects some blood in one bowl and some in another, and later mixes them together before performing the placements, the blood is not sanctified.

The Gemara suggests that Rabbi Eliezer contradicts himself, as regarding the Kohen Gadol's griddle-cake offering (minchat chavitin), he holds that it is sanctified even if placed in two separate bowls. To resolve this, the Gemara first suggests that perhaps Rabbi Eliezer does not derive one law from another—specifically, a mincha offering from blood. However, this is rejected because Rabbi Eliezer does derive laws for a mincha from the bowls of frankincense of the Showbread. In conclusion, the Gemara distinguishes between learning a mincha offering from another mincha-style offering and learning a mincha offering from an animal sacrifice (blood).

Rabbi Yochanan disagrees with Rabbi Elazar regarding the minchat chavitin and rules that it is not sanctified if placed in the vessel in parts. Rabbi Acha brings the source in the Torah for his prohibition, and the Gemara brings two braitot that support his opinion and contradict Rabbi Elazar's position.

Rabbi Yochanan's position regarding the Kohen Gadol's griddle-cake offering (minchat chavitin) is questioned in light of a position he holds against Rav in a case of a regular mincha offering that is sanctified even before the person completely filled the vessel with the fine flour. Why does he differentiate between the cases?

The Gemara then asks about Rav, who disagrees with Rabbi Yochanan and requires the vessel to be filled: would he hold like Rabbi Yochanan or Rabbi Elazar regarding the minchat chavitin offering? They conclude that since he derives one item from another (on a different mincha-related issue), he would derive from the minchat chavitin to here, and therefore he must hold like Rabbi Yochanan by the minchat chavitin and requires it to be complete to sanctify.

Since the Gemara mentions a different mincha-related issue where Rav derives one thing from another, they quote that source in its entirety and delve into his debate with Rabbi Chanina about mincha offerings where not all the parts were added yet to the bowl – are they sanctified without everything being there?

At the beginning of the daf, Rabbi Elazar had made a comparison of taking the kometz from a mincha in the Sanctuary, which is permitted as it is derived from the bowls of frankincense from the Showbread. Rabbi Yirmia raises a difficulty against this from a braita, but the drasha in that braita is reinterpreted to fit with Rabbi Elazar's ruling.