(The house of Rav): Rav permits this, and Shmuel forbids.

(Chachamim of Nehardai): Rav forbids and Shmuel permits.

(Rav Nachman bar Yitzchak): A way to remember this is that each place is lenient on themselves (each follows its teacher, and says that its teacher permits).

Question: Rav forbids!

(Rav Simi bar Chizkiyah citing Rav): One may not cram a piece of cloth into the opening of a barrel of beer to seal it. (This shows that Rav holds like R. Yehudah. who forbids Davar she'Eino Miskaven, i.e. squeezing from the cloth.)

Answer: Stuffing the cloth will definitely squeeze;

(Abaye and Rava): R. Shimon agrees that a Pesik Reisha (a case when the result will definitely happen) is forbidden.

Question: Rav Chiya bar Ashi and R. Chiya bar Avin said that Rav rules like R. Yehudah, and Rav Chanan bar Ami said that Shmuel holds like R. Shimon!

Answer: Really, Rav holds like R. Yehudah;

According to the version that the blood is stored, he holds that one ruins the opening;

According to the version that the blood is absorbed, he holds that the wound is destructive.

Question (Rav Chisda - Mishnah): If a girl was married below (12,) the age at which one normally sees Dam Nidah:

Beis Shamai attribute blood seen during Bi'ah on the first four nights to her Besulim (tokens of virginity), and she remains permitted;

Beis Hillel apply this leniency until the wound heals.

If she was married above this age, Beis Shamai apply the leniency the first night;

Beis Hillel are lenient until Saturday night, four nights.

Suggestion: They permit Bi'ah on Shabbos night, even if they did not Bi'ah before!

Answer #1 (Rava): No, they are permitted any night except Shabbos.

Objection (Abaye): 'Until Saturday night, four nights' includes Shabbos!

Answer #2 (Rava): Rather, the Mishnah discusses when they had Bi'ah before Shabbos.

Question: If so, what do we learn from 'until Saturday night'?

Answer: It permits Bi'ah (if it is not the first) on Shabbos.

(Shmuel): One may enter through a narrow opening on Shabbos, even though he might make pebbles fall (off the sides, widening the opening).

Question (Rav Yosef): A Chasan is exempt from Kri'as Shema the first night, until Saturday night if he has not had Bi'ah.

Suggestion: He is exempt (even on Shabbos) because he is distracted because he wants to have Bi'ah (now)!

Answer #1 (Abaye): No, he is troubled that he has not had Bi'ah.

Objection (Rava): Distress does not exempt from Kri'as Shema! If it did, one whose ship sank should be exempt!

Suggestion: Perhaps this is true!

Rejection: Rav taught that a mourner is obliged to keep all Torah Mitzvos, except for Tefilin, since they are called "glory".

Answer #2 (Rava): The Tana'im argue about whether or not Bi'ah Rishonah is allowed on Shabbos (this Tana permits. Shmuel holds like the other Tana.)

(Beraisa #1): If he did not have Bi'ah on the first night, he is exempt (from Kri'as Shema) even on the second. If he did not have Bi'ah on the second night, he is exempt even on the third (which is Shabbos).

(Beraisa #2): He is exempt the first two nights, and obligated on the third.

Rebuttal (Abaye): The authors of both Beraisos forbid Bi'ah. They argue about whether or not distress is an exemption.

(Rashi explains that the following is according to Rava): These two Tana'im argue like the following Tana'im.

(Beraisa): One who marries a virgin may not have Bi'ah Rishonah on Shabbos;

Chachamim permit it.

Question: Who are the Chachamim that permit it?

Answer (Rava): They hold like R. Shimon, who permits Davar she'Eino Miskaven (in this case, wounding or making an opening).

Question (Abaye): R. Shimon agrees that a Pesik Reisha is forbidden!

Answer (Rava): The Beraisa does not discuss Babylonians, who are unskilled in Hatiyah (tilting the Ever to avoid breaking the Besulim). It discusses those skilled in Hatiyah. (For them, it is not a Pesik Reisha.)

Question: If they are skilled, why are they distracted?

Answer: Unskilled men are distracted.

Question: Only skilled men should be permitted!

Answer: Most men are skilled.

Question (Rava bar Rav Chanan): If most men are skilled, why do we do Bi'ah Rishonah with a cloth and Shushbinin (people nearby to ensure that no one will lie about the presence of Dam Besulim? Tosfos - we ask about Shabbos, when he must do Hatiyah.)

Answer (Abaye): Perhaps he will (have normal Bi'ah,) find blood and dispose of it.

Question (Rav Ami): If one opens a scab on Shabbos with intent to make a (lasting) opening (to let out pus and let air enter), he is liable. If he wants only to remove pus, he is exempt (and we hold that it is permitted)!

Answer: Pus in a scab is stored and outside the flesh. Dam Besulim is stored but partially absorbed in the flesh.