Can a Mitzva be done on behalf of an child still in the womb? I.e can I do a donation to a charity in my name, my wife's and my soon to be +1? If so, in what name would that mitzva be done in as +1 ...
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 ...