In the book The Road to Paradise, the author, Maulana Wahiduddin Khan explains that the world of nature functions at the zero-defect level. Yet, we find human life in this world marred by all kinds of evil. According to the Creation Plan, this contradiction will come to an end in Paradise, the eternal world in the hereafter, where man can also attain a perfect life. God created a totally perfect eternal world called Paradise. Then He created man as an eternal creature and placed him temporarily on earth, for the purpose of testing him. One who, in his life before death, comes up to the standard of the citizenship of Paradise, will be granted an abode in this perfect world of Paradise in the hereafter.