That is that He commanded us that a groom be with his wife a full year, such that he not go outside of the city, nor go out to the army nor undergo any of the things that are similar to these, but rather rejoice with her until the completion of a full year. And that is His, may He be exalted, saying, "he shall be free for his home one year" (Deuteronomy 24:5). And the regulations of this commandment have already been explained in Chapter 8 of Sotah. (See Parashat Ki Tetzei; Mishneh Torah, Kings and Wars 7.)