Oral sex
Peripheral halachic discussion of the topic revolves upon whether or not 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.