Which contraception method(s) is the most natural and effective for the husband and wife to practise upon?
Islam frowns on contraception. Western forms of contraception are impermissible due to the harm and damage inflicted on the body. We have just recently read comments of a revert-European nurse in which she explains clearly the massive damage which contraceptives wreak to the body. Allah Ta’ala has already decreed in eternity all those who will be created. No matter what you do or don’t do, the soul which has been decreed to appear on earth will be born. Contraception cannot thwart the Decree of Allah Ta’ala. He creates as He wishes. Repose trust on Allah Ta’ala and be satisfied with whatever He chooses for you.