in the human body and the bodies of all other animals—namely, heat and cold. We thus know that someone brought them together, compelled them to remain united, and sustained them through his subtle care. Otherwise, they would repel and destroy one another. If mutually opposed and repellent things could come together and coexist despite their opposition, without someone to unite them, then water and fire could likewise come together and withstand one another by themselves, without someone to unite and sustain them. This is an inconceivable impossibility. It necessarily follows that they were brought together by someone who compelled them to unite and cohere.

A third proof:

If you examine the structure of this world with your eyes and reflect upon it with your mind, you will find it like a house built and furnished with every implement and provision its inhabitant needs. The sky is raised like a roof; the earth is spread out like a carpet; the stars are arranged like lamps; precious stones are stored away like treasures; the various plants are provided for food, clothing, and drink; and the different animals are made serviceable for riding and put to use for practical needs. The human being is like someone granted ownership of the house and given all that it contains. All this clearly indicates that the world was created with planning, due measure, and order, and that it has a wise Maker, perfect in power and consummate in wisdom. The Book of Allah, Mighty and Majestic, draws attention to this form of reasoning. He, Exalted is He, says:

“And in yourselves. Then will you not see? (21)” [Al-Dhāriyāt: 21]

This points to the signs of workmanship found in the human being: two hands with which he grasps, two feet with which he walks, an eye that sees, an ear with which he hears, a tongue with which he speaks, molars that emerge when he no longer needs to suckle and comes to need food, and a stomach