مسائل المنتخبه (Articles Of Islamic Acts) - الخوئي، السيد أبوالقاسم - الصفحة ١٠٧ - WOMAN HAVING THE HABIT OF TIME

number of days during the ٢nd month is more or less as compared with the ١st month. For example, if the blood starts coming on the let day of each of the two consecutive months but the total number of days is ٨ during the last month ٩ during the ٢nd month the woman concerned should treat the last of the month to be her habit.
٤٩٤. It a woman has the habit of time but the number of her days is not the same and if blood is discharged from her body some quantity of which has the signs of menses and the rest has no such signs and if the blood with signs of menses does not come for a period which is less than ٣ days and more than ١٠ days it is necessary for herto treat this blood as menses and to treat the blood which does not possess the signs of menses to be istihaza. But if her blood comes during the time of her habit, presenceof signs of menses is not essential for its being menses. Hence if it is possible that the blood which comes at the time of her habit may be menses it if necessary for her totreat it to be menses. For example, if blood of a woman comes for ٣ days during the time of her habit it is menses although it may not have the signs of menses. And the samerule applies if, for example, her blood comes for ١ day at the time of her habit and for ٢ days before her habit, or if, for example, her blood comes for ١ day at the time ofher habit and for ٢ days with the signs of menses after her habit. In these two cases also it is necessary that she should treat the ٥ days to be the days of menses. Hence ifthe blood which contains the signs of menses stops before the expiry of ١٠ days from the time of its commencement, all of it is menses. And if blood comes afterwards also andif that blood possesses the signs of menses and the gap between it and the stoppage of the first blood is ١٠ days or more that blood, too, is menses. otherwise it isistihaza.
٤٩٥. If n woman has the habit of time and her blood comes