Question (R. Yochanan): R. Eliezer contradicts himself! There (Nega'im 14:9) he says that the right is Me'akev (if a Metzora has no right ear, thumb or big toe, we put blood on their place), and here he says that the right is not Me'akev (he is Machshir Chalitzah of the left shoe)!

Answer (R. Yosi): There (Metzora), it is written "Yemanis", so the right is Me'akev. Here, it is not written "Yemanis", so the right is not Me'akev.

(R. Yosi Tzaidanyei, in front of R. Yirmeyah): [We learn from a Gezeirah Shavah] "Azno-Azno" - just like there (Metzora), it is his right ear, also here (a Nirtza) it is the right.

Question: [R. Eliezer should learn that the right is Me'akev for Chalitzah -] he should learn from "Raglo-Raglo"! Will we say that the one who learns "Azno-Azno", does not learn "Raglo-Raglo"?!

Note: The Bavli (Kidushin 15a) cites a Beraisa in which R. Eliezer learns "Azno-Azno."

Strengthening of question: It was taught in the name of R. Eliezer [that he learns] "Raglo-Raglo"!

Answer: Tana'im argue about R. Eliezer' opinion. The one who learns "Azno-Azno", he learns "Raglo-Raglo". The one who does not learn "Azno-Azno", he does not learn "Raglo-Raglo";

[The Tana of] our Mishnah [holds that R. Eliezer] does not learn "Azno-Azno", and not "Raglo-Raglo." (We explained this based on REGEL YESHARAH. We do not explicitly find one who does not learn "Azno-Azno." However, R. Shimon (Nega'im 14:9) holds that the right is not Me'akev for Metzora, so it is reasonable that he does not learn Azno-Azno to obligate the right ear for Retzi'a. - PF)