When they wanted to worship...
When they wanted to worship, they turned to them for the sake of intercession and they asked their help for fulfilling their needs so that they explicitly uttered ugly and polytheistic words and sentences when they wanted to say 'Labbayk' (at your service) at the time the rites of Hajj, saying: " I accepted Your call, oh Lord, Who has no partner except the partner that belongs to You and You are the Owner of this partner and You are the Owner of what he owns." The holy Qur'an rejects all these vain imaginations.
In the last sentence, it implies that not only Allah has created all things but also He has precisely defined their proportions and administrations. The verse says: "... and He created everything, then ordered them in due proportions." The dualists' belief, which implies that part of the world creatures is created by Lord and the other part is created by Devil, is also rejected.
According to dualists, creation is divided between Lord and Devil, because they believe that the world is a collection of the bad and the good, while a real monotheist believes that except goodness there is nothing in the world, and if there is any bad it is relative or negative or it is the result of our deeds.
Some points: Exact measurement of creatures: Not only the calculated stable system of the world is among the strong reasons of monotheism and knowing Allah (s.w.t.), but also its exact measurement is another clear reason. We cannot consider measurement of various creatures of this world and its calculated quality and quantity as effect of accident. It is not in line with probability theory.
Scientists have studied about it, and uncovered some mysteries which cause the astonishment of man so much that he unintentionally begins to praise Allah's magnificence and might. Here we refer to some of them: Scientists say that if the outer cover of the earth were 10 feet thicker, there would be no oxygen, a vital material of life.
Or if the depth of seas were several feet more than what is today, all oxygen and carbon of the earth would be absorbed and it would be impossible to have a vegetable or animal life on the earth,and when most probably the crust of the earth and the water of the seas would absorb the whole existing oxygen, and for his growth and man would have to wait for the growth of plants so that through them he could use needed oxygen.