Quran 89:9 from Surah Al-Fajr on Divine Marvels.
وَثَمُودَ ٱلَّذِينَ جَابُواْ ٱلصَّخۡرَ بِٱلۡوَادِ
English translation: And Thamud who carved out the rocks in the valley
Transliteration: wathamuda alladhina jabu al-sakhra bil-wadi