In this way, the Islamic heritage, and in a more accurate term Islamic Sharia, combines stability and flexibility, and this makes it able to absorb all developments in all ages, while preserving general principles and universal rules, and these - I mean principles - are revelations from God and it is not right for humans to interfere in them at all. A controversy that anyone who humans is able to intervene and criticize and amend them. He lays down these universal principles that direct the affairs of creation.