Study Yevamot folio 53B with parallel Hebrew-English text, traditional commentary, and modern study tools. Free access to Babylonian Talmud online.
§ It was taught in the Mishnah: If he performed ḥalitza and then proceeded to either perform levirate betrothal, or give a bill of divorce, or have sex with a second woman, nothing is effective after ḥalitza. The Talmud asks: Granted, it was necessary to teach that in the case of one who performed ḥ
The Talmud answers: And according to your reasoning, that each new case must teach something new, say the latter clause of the Mishnah: If he had sex and then proceeded to perform levirate betrothal, or give a bill of divorce, or perform ḥalitza with a second woman, nothing is effective. In this ca
Rather, one must say that since the tanna taught the case of one who performed ḥalitza and then performed levirate betrothal, he also taught the case of one who had sex and then performed levirate betrothal, due to the similarity between them. And since he wished to teach the case of one who had s
§ The Mishnah taught: With regard to sex, when it is at the beginning nothing is effective after it, but if it was in the middle or at the end, something is effective after it. The Talmud comments: The Mishnah is not in accordance with the opinion of this tanna. As it is taught in a baraita: Abba Yo
And therefore it can be concluded that there are 3 disputes with regard to this matter, i.e., 3 opinions on this issue. The first tanna holds: In the case of sex that is preceded by a disqualifying action, where there is a reason to issue a decree, lest one violate a prohibition by having sex aft