Question 261: We studied something about the theory of Evolution and all that relates to creation as this forms a part of our educational curriculum. The more I read on this subject, the more I become convinced that Allaah is the Only One Who created this universe and all that it contains. Nevertheless, I was greatly astonished to come across a book written by a Muslim author approving the theory of Evolution and supporting it by the Qur’aan! Moreover, one of my Muslim teachers asked me: “Since Islaam forbids a man to marry to his sister; how could brothers and sisters amongst the offspring of Aadam and Eve get married to each other?
Answer: The theory of Evolution which is renowned as the theory of Darwin contradicts the Qur’aan, Sunnah (whatever is reported from the Prophet), and Ijmaa` (consensus of scholars). There are thus proofs from the Qur’aan and authentic Sunnah stating that Allaah (Exalted be He) created Aadam from soil then created Eve from Aadam... read more here.