And We had certainly sent to Thamud their brother Salih, [saying], "Worship Allah," and at once they were two parties conflicting.
The Saheeh International Quran Translation
وَلَقَدْ أَرْسَلْنَآ إِلَىٰ ثَمُودَ أَخَاهُمْ صَٰلِحًا أَنِ ٱعْبُدُوا۟ ٱللَّهَ فَإِذَا هُمْ فَرِيقَانِ يَخْتَصِمُونَAnd We had certainly sent to Thamud their brother Salih, [saying], "Worship Allah," and at once they were two parties conflicting.