How many times is the oneness of Allah mentioned in the Quran?

 The concept of the oneness of Allah (Tawheed) is a central theme in the Quran and is expressed in various forms and verses throughout the entire text. While the exact wording may vary, the idea of Allah's oneness is emphasized repeatedly.

1. Direct References:

Specific phrases like "لَا إِلٰهَ إِلَّا اللّٰهُ" (There is no deity except Allah) and similar expressions occur several times in different contexts.

2. Surah Al-Ikhlas (112:1-4):

This Surah is often considered the clearest declaration of Allah's oneness:

قُلْ هُوَ اللَّهُ أَحَدٌ

Say, “He is Allah, the One.

اللَّهُ الصَّمَدُ

Allah, the Absolute.

لَمْ يَلِدْ وَلَمْ يُولَدْ

He begets not, nor was He begotten.

وَلَمْ يَكُنْ لَهُ كُفُوًا أَحَدٌ

And there is none comparable to Him.”

It summarizes Tawheed in its purest form.

3. Other Verses Emphasizing Oneness:

Verses such as:

وَإِلَٰهُكُمْ إِلَٰهٌ وَاحِدٌ ۖ لَا إِلَٰهَ إِلَّا هُوَ الرَّحْمَٰنُ الرَّحِيمُ

Your Allah is one Allah. There is no god but He, the Benevolent, the Compassionate. Al-Baqarah, (2:163)

In this verse, He stated that the first thing that needs to be expressed is the issue of monotheism. (Qurtubi)

فَاطِرُ السَّمَاوَاتِ وَالْأَرْضِ ۚ جَعَلَ لَكُمْ مِنْ أَنْفُسِكُمْ أَزْوَاجًا وَمِنَ الْأَنْعَامِ أَزْوَاجًا ۖ يَذْرَؤُكُمْ فِيهِ ۚ لَيْسَ كَمِثْلِهِ شَيْءٌ ۖ وَهُوَ السَّمِيعُ الْبَصِيرُ

Originator of the heavens and the earth. He made for you mates from among yourselves, and pairs of animals, by means of which He multiplies you. There is nothing like Him. He is the Hearing, the Seeing.

لَهُ مَقَالِيدُ السَّمَاوَاتِ وَالْأَرْضِ ۖ يَبْسُطُ الرِّزْقَ لِمَنْ يَشَاءُ وَيَقْدِرُ ۚ إِنَّهُ بِكُلِّ شَيْءٍ عَلِيمٌ

To Him belongs absolute control of the heavens and the earth. He spreads the bounties to whomever He wills, or reduces it. He is aware of all things. Surah Ash-Shura, (42:11–12)

These reinforce the idea of Allah's absolute uniqueness and oneness.

4. The Concept of Tawheed:

Although the specific words may not always appear, the principle of Allah's oneness is conveyed in nearly every Surah, either directly or indirectly.

While it is difficult to count a single, fixed number of occurrences of the oneness of Allah because of the variations in wording, scholars affirm that the Quran continuously and consistently emphasizes this theme. It is the foundation of Tawheed and the core of Islamic belief.