Fellatio in Halacha information

Within the guidelines of halacha, as presented by chazal and early rabbinic authorities, fellatio is classified as ביאה דרך איברים (penetration by way of the limbs) or מעשה חידודים בעלמא (general acts of sharpening).

Peripheral halachic discussion of the topic revolves upon whether a husband may engage in varying sexually-gratifying acts with his wife – including fellatio – performed up to ejaculation. The opinions below use the term biyah sheloh kedarka in their original Hebrew text, which refers to anal sex, not any form of extra-vaginal ejaculation. This distinction is very important, as these same authorities do in fact prohibit ejaculation through other forms of extra-vaginal sex, such as oral sex, etc. Oral sex, up until ejaculation, is entirely permitted according to most Talmudic and halachic authorities. Ejaculation should take place within the vagina.

The discussion includes the opinion of the permitting authorities limiting their permit to specific frequencies and timings, the consensus being that any halachic-permit ("hetter") is solely applicable within the exclusive framework of a Torah-permitted marital relationship and strictly during the time that one's wife is not in her niddah state.