 The Qu'ran instructs women to wait at least three menstrual periods, called Iddah, before committing to a second marriage.The purpose of the Iddah is to ensure that a woman's pregnancy will be linked to the correct biological father.In the case of a Talāq, which is a divorce initiated by the man, the man is supposed to announce the words "I divorce you" aloud three times, each separated by a three-month waiting period.