"And it is Allah's; everything in the heavens as well as everything on the earth, that He may reward those who do evil for that which they do, and reward those who do good with goodness. Those who avoid the great sins and the indecencies, but the passing idea surely thy Lord is Most Forgiving. He knows best when He brings you forth from the earth and when you are embryos in the wombs of your mothers; so ascribe not purity to yourselves. He knows him best who guards against evil inclinations."