Sura 27 An-Naml (The Ant), ayah 45

1. وَلَقَدْ أَرْسَلْنَا إِلَىٰ ثَمُودَ أَخَاهُمْ صَالِحًا أَنِ اعْبُدُوا اللَّهَ فَإِذَا هُمْ فَرِيقَانِ يَخْتَصِمُونَ

   And We had certainly sent to Thamud their brother Salih, (saying), "Worship Allah," and at once they were two parties conflicting.

   27:45

Translation: Saheeh International