Surah An-Naml, ayah 45

وَلَقَدۡ أَرۡسَلۡنَآ إِلَىٰ ثَمُودَ أَخَاهُمۡ صَٰلِحًا أَنِ ٱعۡبُدُواْ ٱللَّهَ فَإِذَا هُمۡ فَرِيقَانِ يَخۡتَصِمُونَ ٤٥

Walaqad arsalnā ilā thamūda akhāhum sālihan ani'budullāha fa idhā hum farīqāni yakhtasimūn

And We had certainly sent to Thamūd their brother Ṣāliḥ, [saying], "Worship Allāh," and at once they were two parties conflicting.