At Talaq Ayah 4

وَٱلَّــٰٓــِٔى يَئِسْنَ مِنَ ٱلْمَحِيضِ مِن نِّسَآئِكُمْ إِنِ ٱرْتَبْتُمْ فَعِدَّتُهُنَّ ثَلَـٰثَةُ أَشْهُرٍ وَٱلَّــٰٓــِٔى لَمْ يَحِضْنَ‌ۚ وَأُوْلَـٰتُ ٱلْأَحْمَالِ أَجَلُهُنَّ أَن يَضَعْنَ حَمْلَهُنَّ‌ۚ وَمَن يَتَّقِ ٱللَّهَ يَجْعَل لَّهُۥ مِنْ أَمْرِهِۦ يُسْرًا ٤ As for your women past the age of menstruation, in case you do not know, their waiting period is three months, and those who have not menstruated as well. As for those who are pregnant, their waiting period ends with delivery. And whoever is mindful of Allah, He will make their matters easy for them.