Translation:

9. And with the Thamud (people) who cut out (huge) rocks in the valley?--

Notes (Tafseer)

6116. For the Thamud see n. 1043 to vi. 73. Their civilisation shows traces of Egyptian, Syrian, and (later) Greek and Roman influences. They built fine temples, tombs, and buildings cut out of the solid rock. The cult of the goddess Lat flourished among them.