If this divorced woman
has married before having three menstrual periods after her divorce, this marriage is Batil (null and void). The divorced woman must have three menstrual periods after being divorced if she desires to remarry. Allah (Exalted be He) says:
And divorced women shall wait (as regards their marriage) for three menstrual periods
Those who do not have menstrual periods due to their young or old age have to wait for three months. Allah (Exalted be He) says:
And those of your women as have passed the age of monthly courses, for them the ‘Iddah (prescribed period), if you have doubt (about their periods), is three months; and for those who have no courses [(i.e. they are still immature)
What this shaykh said is invalid. The `Iddah begins from the time of divorce; not from the time of her husband's absence. (Part No. 18; Page No. 249) May Allah grant us success. May peace and blessings be upon our Prophet Muhammad, his family, and Companions.