Can you explain according to orthodox sources why people say that a woman isn’t allowed to masturbate because she isn’t spilling seed the same way a man is

This is an important halachic question that deserves a careful, nuanced answer. The short answer is: the claim that women face no prohibition is an oversimplification — Orthodox sources do discuss female self-stimulation, and there is a real prohibition, though its severity and source differ significantly from the male case.

Key Takeaways

The Torah-level prohibition of hashchatat zera (wasting seed) applies specifically to males, since women do not produce seed in the halachic sense.
However, Orthodox authorities derive a separate prohibition for women from other sources, including concerns about niuf (licentiousness) and improper sexual arousal.
The female prohibition is generally considered rabbinic in nature rather than a biblical d'oraita violation, making it less severe in the halachic hierarchy.
The underlying logic is not solely about "spilling seed" — it also encompasses broader values of kedusha (holiness) and proper channeling of sexuality.
There is some minority opinion that permits female self-stimulation under certain circumstances, though this is not the mainstream Orthodox view.

The Male Prohibition: Hashchatat Zera

The male prohibition is the more well-known and more severe one. It is rooted in several sources:

Biblical Source

The primary narrative source is the story of Onan in Genesis 38:

"וְשִׁחֵ֣ת אַ֔רְצָה לְבִלְתִּ֥י נְתׇן־זֶ֖רַע לְאָחִֽיו" "And he spilled [his seed] on the ground, so as not to give seed to his brother." [Genesis 38:9]

God punished Onan with death for this act [Genesis 38:10]. The Talmud and later authorities derive from this episode the prohibition of hashchatat zera — the "destruction" or "wasting" of male seed.

Codified in Shulchan Arukh

The Shulchan Arukh codifies this as follows:

"אסור להוציא שכבת זרע לבטלה ועון זה חמור מכל עבירות שבתורה" "It is forbidden to emit semen wastefully, and this sin is more severe than all sins in the Torah." [Shulchan Arukh, Even HaEzer 23:1]

This is an extraordinarily strong statement. The Beit Shmuel and other commentators note that this language reflects the gravity with which the Rishonim treated this prohibition.

Why Women Are Different: The Biological-Halachic Logic

The reason the hashchatat zera prohibition does not apply to women in the same way comes down to a fundamental halachic distinction:

The Torah prohibition is specifically about male seed (zera), which carries the potential to create life.
Women, in the halachic framework, are not considered to "emit seed" in the same procreative sense. The Rambam (Maimonides) frames the male prohibition partly around the destruction of potential life-force.
Therefore, the specific biblical transgression of wasting seed — as derived from Onan — is inapplicable to women by definition.

So Is There Any Prohibition for Women?

Yes — and this is where the discussion becomes more nuanced.

1. The Prohibition of Niuf (Licentiousness)

The Rambam in Mishneh Torah (Issurei Bi'ah 21:18) rules that a woman who "stimulates herself" (mesolelet) violates a prohibition derived from the verse "You shall not do as the deeds of the land of Egypt" [Leviticus 18:3]. This is associated with sexual immorality and licentiousness generally.

2. The General Principle of Kedusha (Holiness)

Orthodox authorities emphasize that sexuality is meant to be expressed within the marital relationship. The Iggrot Moshe (Rav Moshe Feinstein) and others invoke the broader framework of kedushah — that Jewish sexual ethics are about sanctifying the body within proper boundaries, not merely about technical seed-wasting.

3. Arousing Improper Desire

The Shulchan Arukh (Even HaEzer 23) and the Rema note that one should not arouse sexual desire without a proper outlet. While framed in the male context, the Aruch HaShulchan extends a version of this concern to women as well.

The Severity Comparison

| | Male | Female | |---|---|---| | Primary source | Biblical (d'oraita) | Rabbinic or derived | | Named prohibition | Hashchatat zera | Niuf / licentiousness | | Severity in Shulchan Arukh | "More severe than all sins" | Prohibited but less severe | | Marital context | Still generally prohibited | More complex — some leniency in marital context |

An Important Nuance: Marital Context

Some authorities note a distinction for women within marriage: if self-stimulation is used to enhance the marital relationship (e.g., arousal before intimacy with one's husband), some poskim are more lenient. This leniency has no parallel in the male case, precisely because there is no hashchatat zera concern for women.

The Talmudic Backdrop

It is worth noting that the Talmud in [Nedarim 20b] discusses marital intimacy with significant latitude:

"כֹּל מַה שֶּׁאָדָם רוֹצֶה לַעֲשׂוֹת בְּאִשְׁתּוֹ — עוֹשֶׂה" "Whatever a man wishes to do with his wife, he may do."

This passage is about marital relations broadly, but it reflects that the Talmudic framework around sexuality is complex and not reducible to one simple rule.

Bottom Line

The popular claim that "women can't be prohibited because they don't spill seed" is half-correct: it accurately identifies why the specific male prohibition doesn't apply to women. But it incorrectly concludes there is therefore no prohibition. Orthodox halacha does prohibit female self-stimulation — through different mechanisms and at a different level of severity.

For personal guidance on this or related matters, please consult your local rabbi or posek.