ה הלכות ייבום וחליצה. יש בכללן שלוש מצוות – שתי מצוות עשה, ואחת מצות לא תעשה; וזה הוא פרטן: (א) לייבם; (ב) לחלוץ; (ג) שלא תינשא יבמה לאיש זר עד שתסור רשות היבם מעליה.
5 LAWS CONCERNING LEVIRATE MARRIAGE AND FORMAL RELEASE FROM THE OBLIGATION OF ENTERING INTO SUCH A UNION. These comprise three precepts, of which two are affirmative precepts, while one is a negative precept. These, in detail, are as follows: 1) to marry the widow of a deceased brother who left no surviving issue; 2) that, if the brother is not willing to enter into such a union, he shall release the widow by a formal refusal in accordance with the prescribed ritual; 3) that she shall not marry another man till the levirate obligation has been removed.