(Addariyath) 51 : 45
فَمَا اسْتَطَاعُوا مِنْ قِيَامٍ وَمَا كَانُوا مُنْتَصِرِينَ
Then they were unable to stand up, and they were not helped.
People of Prophet Swalih were making their houses by drilling the rocks. By the earthquake when their houses were fallen upon them, they couldn’t even stand up or they were not helped by any others. Thus they were destroyed with their own creations.
See explanation 28: 81; and 50: 36.