And Allah created you of dust, then of the life-germ, then He made you pairs; and no female bears, nor does she bring forth, except with His knowledge; and no one whose life is lengthened has his life lengthened, nor is aught diminished of one's life, but it is all in a book; surely this is easy to Allah.

And (as for) those of your women who have despaired of menstruation, if you have a doubt, their prescribed time shall be three months, and of those too who have not had their courses; and (as for) the pregnant women, their prescribed time is that they lay down their burden; and whoever is careful of (his duty to) Allah He will make easy for him his affair.