Is it permissible to use contraception, in any of its forms, for two years or more to allow the wife to complete her studies before pregnancy, and does this negate one of the most important reasons for marriage in Islam?

Marriage in Islam aims to produce offspring and increase the Muslim nation. It is permissible to practice coitus interruptus ('azl) with the wife's permission, as it deprives her of her right to full enjoyment and children. It is also permissible for the spouses to temporarily regulate births if the method is safe for the wife and with the husband's permission.