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I have heard it said, "Every Jew must have at least three children (though more is preferable). Two to replace the parents when they die, and at least one more to make up for those lost in the Shoah."

I thought only my parents said this until I read it in a novel recently. I know that to "be fruitful and multiply" is an important value, but articulated like this specifically - is it a popular notion? If so, amongst whom? What is the origin?

msh210
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Meliorate
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2 Answers2

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Yevamot 61b:

Mishnah: One may not desist from reproduction unless he has children. Bais Shamai say two males, Bais Hillel say one male and one female, as it says (Berashis ch. 5) “He created them male and female”

Gemorah: Bais Shamai says: two males. What is the reason for Bais Shamai’s position? We learn from Moshe as it says (Divrai Hayamim 1 ch. 29) “the sons of Moshe: Gershom and Eliezer.” And the reason for Bais Hillel? We learn from the creation of the world. Why does Bais Shamai not learn from the creation of the world? We do not learn what is possible from what is impossible (Rashi explains the opinion of Bais Shamai that it was impossible to create the world with only two males since they could not reproduce. However, now that there is a large population and no lack of women in the world, the mitzvah could be defined as having two sons)

copied from http://www.hochheimer.net/rabbi_audio/Mitzvas%20Peru%20Urvu%20sources%201.pdf

bondonk
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The Shulhan Arukh itself brings in Even HaEzer 1:5 that a man need only father a son and a daughter, with the caveat that they are both fertile and out live him. However Rav Haim HaLevy Donin writes in his book To Be a Jew p123 that a person should have four. However he does note:

The minimum number of children one must have to fulfill the command is a matter of Rabbinic dispute.

Rabbi Michael Tzadok
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