Can you please explain the word tawhiyd (verble noun Or masdar) and how it is in the Quran in its rooted form. Thanks in advance.
The root و ح د was mentioned in the Quran more than a hundred times: https://tanzil.net/#search/root/%D9%88%D8%AD%D8%AF
If you are asking if the oneness of Allah was mentioned in the Quran, well, it was mentioned many times throughout the Quran with and without this root. Like واحد – أحد and
Take surah Al-Ikhlaas as an example, which is majorly about توحيد. However, the absence of the word توحيد literally in the Quran does NOT mean that توحيد is not mentioned in the Quran.
Allah knows best.