my day (5). The Prophet (peace and blessings of Allah be upon him) was indeed taken during the day. The day follows the preceding night, because (6) the day is a follower of the night. For this reason, the beginning of the month is the night; if one were to vow to seclude himself (i'tikaf) for a month, he enters his place of seclusion before the sunset of the day preceding it, and exits it after the sunset of the last day of it. Thus, he begins with the night. If he wishes to make the day added to the night that follows it, it is permissible, because there is no disparity in that.

Section: If he goes out from the presence of one of his wives during her time, and if that is during the day, or at the beginning of the night, or at the end of it in which it is the custom to be out and to go out for prayer, it is permissible. For the Muslims go out for the Isha prayer and for the Fajr prayer before its rising. As for the day, it is for livelihood and being out and about. If he goes out at other than that time and does not linger, returning shortly, he does not have to make it up for her, because there is no benefit in making it up. If he stays away, he must make it up to her, whether his stay was for an excuse, such as work or imprisonment, or without an excuse, because her right has been missed by his absence from her. If he likes to consider his making it up as his absence from the other, similar to how he was absent from this one, it is permissible, because equity is achieved by that, and because if it is permissible for him to leave the night completely in the case of each of them, then a portion of it is more appropriate. It is recommended that he makes it up to her at a similar time, because that is more complete in terms of equivalence; and in making up (missed time), equivalence is taken into account, just like in making up acts of worship and rights. If he makes it up at a different time of the night, such as if he missed her in the first part of the night and makes it up in the last part, or missed her in the last and makes it up in (7) the first, there are two viewpoints; one of them...