505. Nasiya is a woman who has forgotten her habit of time and duration, and such women are of various types. One of them is a woman who had a fixed habit of duration, and has now forgotten it. If she sees blood for three or more days, not exceeding ten, she will treat all of it as Hayz.
But if she sees blood for more than ten days, then she is classified as Mudhtaribah, and she will follow rule nos. 500 and 501, with one difference. While determining her duration, she must know that the duration she is fixing is not less than her usual habit, nor can she fix a longer duration than her usual habit.Similar is the case of a woman who had a fixed duration, but it slightly varied each month, for example, she saw blood for six days, and at times for seven days in a month. Such a woman, if she is unable to decide on the basis of signs, or the habit of her relatives etc. then she should fix her duration within the limits of six and seven days.