Negative commandment · Lo Ta’aseh #349 of 613
For a woman not to perform a sexual act with an animal
שלא תביא אישה בהמה עליה
The verse · Vayikra 18:23
וּבְכׇל־בְּהֵמָה לֹא־תִתֵּן שְׁכׇבְתְּךָ לְטׇמְאָה־בָהּ וְאִשָּׁה לֹא־תַעֲמֹד לִפְנֵי בְהֵמָה לְרִבְעָהּ תֶּבֶל הוּא
“Neither shalt thou lie with any beast to defile thyself with it: neither shall any woman stand before a beast to lie down before it: it is perversion.”
The Rambam’s words
For a woman not to perform a sexual act with an animal, as [Leviticus 18:23] continues: "...and a woman should not present herself to an animal for sexual purposes."
שלא תביא אישה בהמה עליה, שנאמר "ואישה, לא תעמוד לפני בהמה לרבעה" (ויקרא יח,כג).
Why · Sefer HaChinuch #211
That women not lay with the beasts
“The root of this commandment is included with the one before it.”
Where in the Mishneh Torah
Hilchot Forbidden Intercourse הלכות איסורי ביאה