By the Grace of G-dRosh Chodesh Adar, 5732Brooklyn, N.Y.
Blessing and Greeting:
With regard to the question of birth control which you mention in your letter, I trust that you know that generally the Jewish religion opposes it. As a matter of fact, childbearing is the first mitzvah in the Torah, Toras Emes and Toras Chayim, the first Divine commandment being, “Be fruitful and multiply.”1 It is only in exceptional cases that Jewish Law permits certain forms of birth control. If you have any question in this regard, you should put it to a practicing experienced Rov and get his ruling, for it is not within the sphere of my duties to pasken shaalos.
Finally, let me also observe that the blessing of children is not something which a person may choose at will, but it is a blessing from G-d. Therefore one should very carefully consider — even if there were no other motives — whether one should interfere in this area.2
I trust that the above lines, though by far inadequate in relation to the subject matter, will suffice to help you put matters in their right perspective.
With blessing,
Notes and sources
1) Bereishis 1:28.
2) For a more comprehensive view on the subject of family planning see the Rebbe's message in this regard (from the Sicha of 17 Sivan, 5740); Likkutei Sichos, vol. 25, pp. 35-37; A Partner in the Dynamic of Creation: Womanhood in the Teachings of the Lubavitcher Rebbe, Rabbi Menachem M. Schneerson (SIE, 1994), pp. 45-55.
Published: The Letter and the Spirit, vol 6 (Nissan Mindel Publications, 2023), p. 58.
Note: Letters printed in "The Letter and the Spirit" are from the Archives of Rabbi Nissan Mindel A"H, the Rebbe's personal secretary entrusted with writing up the Rebbe's orally dictated responses. The “Nissan Mindel Archives” are comprised of secretarial copies, including first drafts, and may have subsequently been published with editorial changes. Therefore the letters as they appear in the book may not be the final signed version.
https://drive.google.com/file/d/1pVeGEpU67aBYB2ydskeMtkoKw4p2wnB2/view?usp=drive_link