Overall meaning :
If you are in doubt concerning the waiting period of those of your wives who are past the age of menstruation, know that their waiting period is three months. This also applies to those who have not yet menstruated due to their young age or otherwise. As for pregnant women, their waiting period ends when they give birth. For everyone who fears Allah by doing what He commands and avoiding what He forbids, Allah will make all his affairs easy for him.
What Allah has thus explained to you is His commandment, which He has revealed to you, so that you may observe it. For everyone who fears Allah by doing what He commands and avoiding what He forbids, Allah will erase his sins and increase the reward for his deeds.