Rashi: To teach us that, just as the creation of the animals preceded that of man ¹ , so too does the Torah give precedence to the Dinim of the animals.

Rosh: Yoledes was taught after the forbidden species to teach us that Hashem commands the fetus not to eat them, and it is after he accepts it that he is born.

Moshav Zekenim #1: Yoledes was taught shortly after the Mitzvah to be Kadosh (11:44) since one should sanctify oneself at the time of intimacy, ² and request from the One who gives children. And "Daber el Bnei Yisrael Leimor" teaches us that the men should teach this to their wives.

Moshav Zekenim #2: Yoledes was taught shortly after "Al Teshaktzu es Nafshoseichem"(11:43), to teach that one should not have relations immediately after ³ leaving the bathroom.

Moshav Zekenim #3 (citing Sotah 11b): Yoledes was taught shortly after Yetzi'as Mitzrayim (11:45), to teach us that the redemption was in the merit of the righteous women of that generation.

Moshav Zekenim #4: Yoledes was taught shortly after "ba'Mayim" (in 11:46), to teach us that a woman becomes pregnant only shortly after she Tovels (Nidah 31b).

Moshav Zekenim #5: Yoledes was taught right after "Lehavdil" (11:47), to teach us that one must separate from one's wife shortly before her Veses (her period). In this merit she will give birth to a male proper to give rulings in Yisrael.

Moshav Zekenim #6: Yoledes was taught right after "Lehavdil" (11:47), to teach that [if she converted or was raped ⁴ ] she must delay three months (before having relations with a man), to distinguish between a fetus conceived in Kedushah and one conceived not in Kedushah.

Refer to 13:2:1:4.

Ba'al ha'Turim: It follows "Lehavdil bein ha'Tahor u'Vein ha'Tamei" to teach us a. the Din of waiting three months between the marriage of two men, in order to identify the father and b. to separate from one' wife close to her period.

Rashi (in Bava Kama, 38b): It precludes Nochriyos from the Dinim of Tum'as Leidah. ¹

Rashi and Ramban #1: To teach us that, even if the baby is born squashed ¹ - and resembles Zera (semen), the woman is nevertheless Tamei Leidah.

Ramban #2 (citing Nidah, 31b): The sequence of the Pasuk teaches us that if the woman 'seeds' ² first, the baby will be a boy; whereas if the man 'seeds' first, then it will be a girl. ³

Moshav Zekenim (citing Nidah 40a): "Ki Sazri'a ve'Yaldah" teaches that this Parshah applies only if the woman gave birth from the place of Hazra'ah - to preclude birth via Caesarian section. ⁴

Kerisos, 7b: The Torah writes "Ishah" to include a Giyores and a Shifchah Cana?anis ⁵ in the Din of Tum'as Leidah.

Yerushalmi Pesachim, 2:1: To include where the baby is born dead (since 'Ben' implies a live son). ¹

Sifra: To teach us that she is Tame'ah, but the baby is not.

Nidah, 31b: Because, when a woman is about to give birth, she swears that she will not be intimate with her husband again. Then, after she has given birth she relents, seven days after a boy - when everyone is happy, ¹ and fourteen days after a girl, when everyone is sad.

Bava Basra, 127a: It implies that the Din of Milah on the eighth day is confined to where the baby is known to be a male when he us born, to preclude a Tumtum who is torn open and is found ton be a boy only after he is born. ¹

Rashi #1: To teach us that she is Tamei Leidah even though she gave birth without seeing blood. ¹

Rashi #2 (in Pesachim, 90b): To teach us that, like a Nidah, she must Tovel at night-time. ²

Moshav Zekenim (citing Nidah 35b): "Devosah Titma" includes Bo'el Yoledes (he is like Bo'el Nidah), and the nights (we do not expound "ki'Yemei" to exclude the nights), and Yoledes be'Zov, that she must count seven clean days (like a regular Zavah) ³ - just like clean days of Nidah - in which she does not see blood - do not count towards the seven clean days that a Zavah needs, so too, do the clean days of Leidah not count towards the seven clean days that a Yoledes be'Zov needs.

Sifra #1 (according to the Ra'avad): This teaches us that even though Koshi (pains before birth) is Metaher from Zivah, it is not Metaher from Nidah.

Sifra #2: To teach us that, like by Nidah, ⁴ the seven days must be consecutive.

Rashi #1: It is an expression of flowing. ¹

Rashi #2, Ramban #1, and Rashbam: It is an expression of sickness ² - because when a woman sees blood, she is sick - since her head and her limbs feel heavy.

Ramban #2: It is an expression of plague and pain. ³

Sifra: "B'nei Yisrael" precludes Nochriyos. "Ishah" includes converts ¹ and Sh'fachos, both before and after they have been set free (Kerisos 7b).

Moshav Zekenim: It is both for a (viable baby, that was in the womb for) seven month and nine month baby, and an eight month baby (a Nefel) or a mashed baby, or it came out cut up. There is an argument if the head was cut up. It is even for a miscarriage after 40 days, or a Shilya (fetal sac), However, the form of a fish is excluded; it must be a human form. Tana'im argue about the form of an animal.

Moshav Zekenim #1 (citing R. Yeshayah); If not, we would have learned from a Kal va'Chomer. Yoledes Nekevah, has more Y'mei Tohar, and she is Tamei for fourteen days, and all the more so Yoledes Zachar!

Moshav Zekenim #2: If she gave birth during the days of Zivah, due to Dam Leidah she would be Shomeres Yom k'Neged Yom, and she could immerse the next day, The Pasuk teaches that she is Tamei for seven days.

Moshav Zekenim #3: If she became Nidah and gave birth on day seven ¹ of Nidah, Dam Leidah would not affect her, and she could immerse at night. The Pasuk teaches that she is Tamei for seven days.

Moshav Zekenim #4 (citing R. Yitzchak): This teaches about Yoledes amidst Koshi (labor pain)..The blood should not be Metamei her, since we expound "Damah" but not blood due to birth of a child (Nidah 36b).

Moshav Zekenim #1: This corresponds to seven days of Aveilus. ¹

Moshav Zekenim #2, Otzar ha'Midrashim and R. Avigdor (in Nidah 30b): This recalls that a male was created on day six of creation. The Taharah after his birth is after seven days, which is seeing the countenance of Shabbos. Chavah was created in the second week, according to R. Pinchas ben Ya'ir (unlike Chachamim, who say that also she was created on day six), so her Taharah is after 14 days.