15:81 - 83, Qur'an
[For] We gave them Our signs, but they were turning away from them. And they used to carve houses from the mountains, feeling secure. But the shriek seized them in the [early] morning -
27:51 - 52, Qur'an
[For] they planned a plan [to kill their messenger Salih], and We planned a plan, while they did not perceive. [So] those are their houses, in ruins because of the wrong they had done. Indeed, there is a sign in that for people who know.