{ And those of your women who despair of menstruation, if you have doubts, the time of watchfulness is three months; and those who have not yet menstruated } Al-talaq 4

{ And those who have not yet menstruated } He is saying: And likewise the waiting periods for those young girls who have not yet menstruated, if their husbands divorce them after having entered [al-dukhul, i.e. sex].