2.Those who have only the habit of time

487. Women who have only the habit of time are three types:

First, a woman who sees blood in each of the two consecutive months on a given day, and then becomes Pak after a few days. The duration of blood varies in each month. For example, if the blood is seen on the 1st of each month but stops on the 7th in the first month and on the 8th in the second month, her habit of time will be the first of every month.

Second, a woman who is not free of blood but for 2 months consecutively at a certain time, her blood shows signs of Hayz; in other words, thick and warm blood that is discharged with pressure and irritation, and the rest of her bloods have signs of Istihaza, and the number of days which it has signs of Hayz is not equal in those two months. For example, in the 1st month, it is from 1st to 7th and in the second month, it is from 1st to 8th, her blood shows signs of Hayz and other times it shows the signs of Istihaza. This kind of women should consider the first of the month as their Hayz habit.

Third, a woman who sees blood in two consecutive months on a given day, for, say 3 or more days and then it stops and thereafter is seen again, but the total number of days does not exceed ten days.
However, the number of days during the 2nd month is either more or less than the days in the 1st month. For example, if the blood is seen on the 1st day of each of the two consecutive months but the total duration of days in 8 in the 1st month and 9 in the 2nd month, she should treat the 1st of the month to be her habit of time

488. If a woman who has the habit of time sees blood on her habitual time or two or three days earlier or after her habit, so that it is said that her Hayz has become early or late, even if her blood has not the signs of Hayz, she must act according to the rules of Haaez women, but if later she finds out that it was not Hayz, for example, she becomes Pak before 3 days, she must perform Qadha for the worships which she has not offered

489. If a woman with the fixed habit of time sees blood on her habitual time for more than 10 days and if she is unable to determine the exact duration of Hayz from its signs, then as a precaution, she will follow the habit of her paternal or maternal relatives, irrespective of whether they are living or dead; provided that their habits are equal. If their habits are not equal, for example, some of them have 5 days and some have 7 days, she cannot choose their habit for Hayz, except than cases where the difference is so little that they should not be taken into consideration

490. A woman who has the habit of time and she has determined her Hayz according to the situation of her relatives, must consider any day at the beginning of the first month which has been her habit day, as the beginning of her Hayz; for example, a woman who has the habit of seeing blood in the first day of the month and she becomes Pak on 7th or 8th day, if she does not see blood for 12 days and her relatives habit is 7 days, she must consider the first day of the month as Hayz period and the rest is Istihaza

491. A woman who has the habit of time and also she has to determine her relatives habit for her Hayz period, if she does not have relatives or the habits are different, she must choose three days or six days or seven days from the time she sees blood in a month as Hayz period and consider the rest as Istihaza, and she must follow the same order in the following months.