Does donating sperm to a woman who is not your wife (who then goes on to bear children from it) fulfill the mitzvah of p'ru ur'vu?

Alternatively, is it a violation of halakha? Does it matter whose the egg is?

  • (Related but not exactly on point) A friend who was going to be treated for leukemia before he married was concerned that his fertility would be compromised. He was told to have some seed frozen (essentially deposited at a sperm bank for later withdrawl) before undergoing treatment, such that he could impregnate his wife later should he become unable to have children. He was already engaged at the time.
    – Ze'ev
    Nov 12, 2012 at 22:32
  • Can someone answer the second part of this question, or should we maybe start a separate question for the issue of whether or not it is halachicly permissible? Apr 7, 2014 at 23:33

1 Answer 1


I heard a talk from Rabbi Barry Freundel at a medical ethics conference several years ago. The mitzva per se of pru urvu means: "marry someone who is able to bear children, to the best of your knowledge, and go about normal married life." One of the Achronim (sorry don't recall offhand) specifically writes he's not sure if one fulfills pru urvu if one's haploid cells wound up in a bathtub and then impregnated a woman who subsequently bathed there. I'm sure that case sounded crazy to most listeners then -- but today we call it artificial insemination.

You're discussing donating; receiving from a sperm bank is a different question.

There are almost always halachic issues with harvesting sperm (which raises the halachic problems -- I can see no reason donating to the bank beyond that should be problematic), yet I've read of sperm banks in Israel where rabbis have allowed it. CYLOR.

One could begin to argue in terms of halachic values (not the absolute commandment of "pru urvu"), such as "the world was made to be inhabited", or "think how this could help a childless couple", or the like; but I've never heard anyone say that anything depends on the recipient.

  • 1
    +1. Any idea why, or on what authority, the mitzva is interpreted this way? It seems counter the usual understanding.
    – msh210
    Aug 9, 2012 at 18:51
  • Rabbi Freundel has to mean how to practically perform the Mitzvah, not what fulfills the obligation (see sources here that even a Mamzer fulfills the Mitzvah). hochheimer.net/rabbi_audio/…
    – Yishai
    Aug 9, 2012 at 20:54
  • @Yishai, even a Mamzer -- but conceived normally! It's unclear if one fulfills the obligation by donating sperm.
    – Shalom
    Aug 9, 2012 at 22:52
  • 1
    This is a good answer (halfway there) but doesn't actually answer the question raised. Where does the makhlokhet on artificial insemination stem from? Aug 10, 2012 at 22:13
  • 2
    related: judaism.stackexchange.com/questions/59921/…
    – Loewian
    Feb 16, 2016 at 15:21

You must log in to answer this question.

Not the answer you're looking for? Browse other questions tagged .