Suggestion: Tana'im argue about whether or not Hakafas Kol ha'Rosh is forbidden.

(Beraisa #1) Suggestion: Perhaps "Do not round the corners of your head" applies even to a Metzora (who must shave to become Tahor)!

Rejection: "(A Metzora shaves) Rosho" teaches that he shaves even his Pe'os.

(Beraisa #2) Suggestion: Perhaps "A Ta'ar will not pass over Rosho (of a Nazir)" applies even to a Metzora!

Rejection: "Rosho" teaches that he shaves his head even if he is a Nazir.

Suggestion: The Tana of Beraisa #2 permits Hakafas Kol ha'Rosh. (Therefore, we need no source to permit a regular Metzora to shave his Pe'os.) "Rosho" teaches that the Mitzvah for a Metzora to shave overrides an Aseh and a Lav (for a Nazir to shave his head);

The Tana of Beraisa #1 forbids Hakafas Kol ha'Rosh. "Rosho" teaches that the Mitzvah for a Metzora to shave overrides a Lav (Hakafah).

Rejection #1 (Rava): No, both permit Hakafas Kol ha'Rosh.

"Rosho" permits shaving the Pe'os first, and then the rest of the hair on the head.

Since if he cut all his hair at once he would be exempt, even if he cut the Pe'os first he is exempt (and it is permitted).

Objection: The Torah does not permit this!

(Reish Lakish): Whenever one can fulfill both the Aseh and the Lav, he must. If not, the Aseh overrides the Lav. (Here, he can fulfill both by shaving the Pe'os last!)

Rejection #2: Rather, both forbid Hakafas Kol ha'Rosh.

Question: (Tana #1 learns from "Rosho" that an Aseh overrides a Lav.) Tana #2 learns from "Rosho" that an Aseh overrides an Aseh and a Lav. He must know from elsewhere that an Aseh overrides a Lav. What is his source?

Answer: He learns from Tzitzis;

(Beraisa): "Do not wear Sha'atnez (a mixture of wool and linen)", but "Gedilim Ta'aseh Lecha" (you may use Sha'atnez to fulfill the Mitzvah of Tzitzis).

Question: Tana #1 learns from "Rosho" that an Aseh overrides a Lav. Why didn't he learn this from Tzitzis?

Answer: He used that verse to teach Rava's law;

(Rava): "You will put on the threads the corner" - the threads are the same material as the corner of the garment;

Contradiction: (Nearby, it says) "wool and linen together." This implies that the threads must be of wool or linen!

Resolution (Rava): Threads of wool or linen exempt a garment of any material. Threads of any other material only exempt a garment of that material.

Question: Tana #1 learns from "Rosho" that the Aseh overrides a Lav. What is his source that (here) an Aseh overrides an Aseh and a Lav?

Answer: He learns from "Zekano":

(Beraisa) Suggestion: Perhaps "(Kohanim) will not shave their beards" applies even to a Kohen who is a Metzora!

Rejection: "(A Metzora shaves) Zekano", even if he is a Kohen.

Question: Tana #2 learns from "Rosho" that an Aseh overrides an Aseh and a Lav. Why didn't he learn from "Zekano"?

Counter-question: If we can learn from "Zekano", why do we hold in general that an Aseh does not override a Lav and an Aseh?

Answer: We cannot learn in general because Isurei Kehunah are weak, for they are not Shavah b'Chol (they do not apply to all people).

Answer: Likewise, we cannot learn that the Aseh for a Metzora to shave overrides the Aseh and Lav of Nazir, for it is more severe than Isurei Kehunah. (It is Shavah b'Chol, for anyone can become a Nazir.)

Question: Tana #2 learns from "Rosho" that the Aseh overrides an Aseh and a Lav. What does he learn from "Zekano"?

Answer (Beraisa) Suggestion: Perhaps "(Kohanim) will not shave their beards" applies even to a Kohen Metzora!

Rejection: "(A Metzora shaves) Zekano", even if he is a Kohen.

Question: How do we know that a Metzora must shave with a Ta'ar?

Answer (Beraisa) Suggestion: "(Kohanim) will not shave their beards" - Perhaps they are liable even if they shave with scissors!

Rejection: "V'Lo Yashchis" (scissors do not cut the entire hair).

Suggestion: "V'Lo Yashchis" - Perhaps he is liable even if he uses a Melaket or Rehitani (tweezers or plane)!

Rejection: "They will not shave" - one is liable only for shaving that destroys, namely, with a Ta'ar.

(Culmination of answer: Since the Torah needed to permit a Metzora Kohen to shave his beard, this shows that the Mitzvah to shave must be with a Ta'ar).

Question: Tana #1 learns from "Rosho" that an Aseh overrides a Lav. Why must the Torah write both "Rosho" and "Zekano"?

From "Zekano" alone we learn that the Aseh overrides a Lav (for a non-Kohen), as well as a Lav and an Aseh (for a Kohen)!

Answer: We cannot learn that a Kohen may shave his beard from a Nazir, since Isurei Nazir are weak, because a Nazir can annul his vow;

We cannot learn that a Nazir can shave his head from a Kohen, since the Isur of a Kohen is weak; it is not Shavah b'Chol.

We cannot learn from them to other Mitzvos, for the reasons given.

(Rav): One may shave his entire torso with a Ta'ar.

Question (Beraisa): A man who shaves his underarms or by the genitals is lashed.

Answer: One is lashed for shaving with a Ta'ar. Rav permits shaving with scissors.

Objection: Rav said 'with a Ta'ar!'

Answer: He meant shaving very close with a scissors, like with a Ta'ar.

Version #1 (R. Chiya bar Aba): One who shaves his underarms or by the genitals is lashed.

Question (Beraisa): Removing hair (in these areas) is forbidden only mid'Rabanan.

Answer: R. Chiya bar Aba meant, he is lashed mid'Rabanan.