A man must not have sexual relations with an animal

'Also you shall not have intercourse with any animal to be defiled with it, nor shall any woman stand before an animal to mate with it; it is a perversion.

Hebrew

כג וּבְכָל-בְּהֵמָה לֹא-תִתֵּן שְׁכָבְתְּךָ, לְטָמְאָה-בָהּ; וְאִשָּׁה, לֹא-תַעֲמֹד לִפְנֵי בְהֵמָה לְרִבְעָהּ--תֶּבֶל הוּא.

Greek

23 καὶ πρὸς πᾶν τετράπουν οὐ δώσεις τὴν κοίτην σου εἰς σπερματισμὸν ἐκμιανθῆναι πρὸς αὐτό, καὶ γυνὴ οὐ στήσεται πρὸς πᾶν τετράπουν βιβασθῆναι· μυσερὸν γάρ ἐστιν.

• Parashah: Acharei Mot
• Sefer HaChinuch: 210
• Mishneh Torah: Holiness — Forbidden Sexual Relations

• Leviticus 18:23

Enumeration and classification from BibleData. The Greek is the Septuagint reading of the same verse, carried by the source for comparison.