Tawhid

Tawhid is the central principle of monotheism in Islam. The term is derived from the Arabic root *wahhada*, which means "to unite" or "to make one."

It represents the belief in the absolute oneness and uniqueness of God. For Muslims, this concept is the most important article of faith. It forms the foundation for all religious adherence and submission. The principle holds that God is indivisible and single. This means God cannot be split into parts or divided.

To understand tawhid, one must look at how it distinguishes the divine from the created world. The Quran teaches that God is a unique, independent, and indivisible being. This being is transcendent, meaning God exists beyond the physical world. However, God is also immanent, meaning God is present within the universe. The Quran uses 99 "Excellent Names of God" to describe this complex unity. These names, such as *ar-Rahman*, project divine attributes to the physical plane. While some names like *Malik al-Muluk* are unique to God, others may be shared by humans to remind them of God's presence.

There are specific categories of belief that stand in opposition to tawhid. The primary opposite is *shirk*, which means associating partners with God. *Shirk* is considered a major sin in Islam. It involves attributing divinity to any created entity, including oneself. Scholars classify *shirk* into two distinct types. The first is *al-shirk al-akbar*, which is open and apparent. The second is *al-shirk al-khafi*, which is concealed or hidden. Hidden *shirk* can be unwitting. It occurs when a person performs religious rituals to gain social recognition rather than for God.

Throughout Islamic history, many scholars have sought to explain the implications of tawhid. This intellectual history includes fields like jurisprudence, philosophy, and Sufism. Ali, the first imam in the Shia view and fourth Rashid Caliph in the Sunni view, is credited with establishing Islamic theology. He provided early rational proofs for the unity of God. Ali argued that God is beyond likeness and cannot be divided, even in the human imagination. His work helped lay the foundation for Muslim ethics.

Later, the philosopher Avicenna, who lived from 965 to 1037, introduced advanced logical arguments. He distinguished between essence (*Mahiat*) and existence (*Wujud*). Avicenna argued that existence itself is not part of an object's essence. Therefore, existence must be provided by an external agent-cause. He proposed an ontological argument, which uses reason and intuition to argue for a "Necessary Existent." He also used a cosmological argument regarding the chain of being. He argued that an actual infinite chain of beings is impossible. Therefore, the chain must end in a single, self-sufficient being.

Theologians also use different methods to argue for the oneness of God. One common method is the teleological argument. This approach uses the perceived order and design in nature as evidence of a creator. It assumes there is a directive principle in the processes of the natural world. Another method is *reductio ad absurdum*. In this approach, thinkers reject the ideas of opponents by showing they lead to logical contradictions. These arguments often targeted the beliefs of groups like the Magians or Christians.

In the Islamic view, the world is sustained by God as the ultimate reality. This belief denies any affinity between the creator and the creation. For example, even invisible entities like *jinn* are considered created beings. The uniqueness of the creator is expressed in the daily prayer, *salat*, through the phrase *Allahu akbar*. This phrase acknowledges God's supreme status. By understanding tawhid, believers connect the seen world to the unseen truth of a single creator.