Kiddushin 35A

ולרבי יוחנן בן ברוקא, דאמר: על שניהם הוא אומר: ״ויברך אתם אלהים פרו ורבו״ מאי איכא למימר? משום דהוה תלמוד תורה ופדיון הבן שני כתובים הבאים כאחד, וכל שני כתובים הבאים כאחד אין מלמדין.

The Talmud asks: And according to the opinion of R' Yoḥanan ben Beroka, who says that with regard to both of them, men and women, the verse states: “And God blessed them, and God said to them: Be fruitful and multiply, replenish the earth and conquer it” (Genesis 1:28), what can be said? According to his opinion, women are exempt from only one positive mitzva that is not time bound, Torah study; why not derive other mitzvot from this case? The Talmud answers: The reason this is not a difficulty is because Torah study and the redemption of the firstborn son, from which women are also exempt, are two verses that come as one, and any two verses that come as one do not teach a precedent.

ולרבי יוחנן בן ברוקא נמי, ניהוו פריה ורביה ומורא שני כתובים הבאים כאחד ואין מלמדין! צריכי, דאי כתב רחמנא מורא, ולא כתב פריה ורביה, הוה אמינא: ״וכבשה״ אמר רחמנא ⁠– איש דדרכו לכבש ⁠– אין, אשה דאין דרכה לכבש ⁠– לא.

The Talmud asks: And according to the opinion of R' Yoḥanan ben Beroka as well, let procreation, which he maintains applies to women, and fear of one’s mother and father be considered two verses that come as one and they should not teach a precedent. The Talmud answers: Both cases are necessary. As, if God had written only that women are obligated in fear of their parents, and had not written that they are obligated in procreation, I would say that as God states: “Be fruitful and multiply, replenish the earth and conquer it” (Genesis 1:28), this leads to the conclusion that women are exempt from procreation, by the following reasoning: As it is the manner of a man to go to war and to conquer, yes, he is obligated in procreation, but as it is not the manner of a woman to conquer, she is not obligated in procreation.