Explanation:

The hasan talaaq:

In this the husband is required to pronounce the formula of talaaq three time during three successive tuhrs. If the wife has crossed the age of menstruation, the pronouncement of it may be made after the interval of a month or thirty days between the successive pronouncements. When the last pronouncement is made, the talaaq, becomes final and irrevocable. It is necessary that each of the three pronouncements should be made at a time when no intercourse has taken place during the period of tuhr.