Tawhid: The Foundation of Islamic Belief

Tawhid — the oneness of Allah — is the central concept of Islamic theology and the reason the prophets were sent. Every prophet from Adam to Muhammad, peace be upon them all, carried the same essential message: worship Allah alone and avoid false gods. The Quran states this with unmistakable clarity: "And We sent before you no messenger except that We revealed to him that there is no god but Me, so worship Me" (Quran 21:25). This universal mission of the prophets establishes tawhid not as a sectarian position but as the universal declaration of all revelation.

The scholars of Ahl us-Sunnah have organized tawhid into three categories. These categories are analytical tools derived from the Quran and Sunnah, designed to help Muslims understand the different dimensions of Allah's oneness and to identify where violations of tawhid can occur.

The first category is tawhid al-rububiyyah: affirming that Allah alone is the Lord, the Creator, the Sustainer, and the Sovereign. He alone created the universe from nothing. He alone controls every atom of creation. Rain, health, provision, life, and death are all in His hand. No being in creation shares in this lordship or possesses independent power over creation. This type of tawhid was acknowledged even by the polytheists of Arabia, who recognized Allah as the Creator while directing worship to others alongside Him.

The second and most practically significant category is tawhid al-uluhiyyah: affirming that Allah alone deserves worship. Worship — ibadah — includes every act performed out of love, reverence, hope, and fear toward a being: prayer, supplication, sacrifice, vowing, seeking refuge, making oaths, and placing ultimate trust. All of these acts are the exclusive right of Allah. Directing any of them to other than Allah is shirk, regardless of the intention behind it. This is the tawhid that the polytheists rejected and for which the prophets were opposed.

The third category is tawhid al-asma wa al-sifat: affirming Allah's names and attributes as He described them in the Quran and as the Prophet described them in the Sunnah, without distortion, negation, asking how, or likening them to created things. Allah described Himself as having knowledge, power, will, life, hearing, sight, a face, hands, and other attributes. The Salaf affirmed all of these attributes as real, while insisting that they are unlike the attributes of creation. They steered between two errors: ta'til (stripping Allah of His attributes by denying or reinterpreting them) and tashbih (comparing Allah's attributes to those of His creation).

These three categories are interconnected and must all be present for tawhid to be complete. A person who affirms Allah's lordship and attributes but directs worship to others has incomplete tawhid — the tawhid of the ancient polytheists. A person who affirms worship of Allah alone but denies His real attributes through philosophical reinterpretation has also compromised tawhid in a different way.

The relationship between tawhid and fiqh — Islamic jurisprudence — is one of foundation and branch. Fiqh concerns the practical rulings of the Shariah: how to pray, how to fast, what is halal and what is haram. These matters are important and cannot be neglected. But they are branches that grow from the root of tawhid. A tree without roots does not stand. Similarly, acts of worship performed without sound tawhid — such as prayer offered partly to show others, or fasting accompanied by supplication to the deceased — are corrupted at their foundation.

This is why the scholars of aqeedah have consistently emphasized that tawhid must be taught before and alongside fiqh. The Companion Mu'adh ibn Jabal was sent by the Prophet to Yemen. The Prophet's first instruction to him was to call the people to the testimony of faith — to tawhid — before calling them to the five pillars. The sequence is not arbitrary. It reflects the priority that Allah and His Messenger established.